How to refill/refurbish ANY AIO

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[@shipley0018]

8:04 sounds like fapping

[@SweetArion]

LMAOO

[@dodge1629]

Specially when he says "Look at that !" lmao ! The subtitle should say for that noise: "fapping noise..."

[@DankAlien2580]

“Look at all those bubbles cumin out”. So appropriate 🤣

[@Archonsx]

LMAOO exactly what i was about to comment 😂

[@PutsOnSneakers]

I've reserved a special place in hell for everyone in this thread. disclaimer: J/K I love you guys 😅

[@TheZahand]

The air inside is by design. If your AIO splashes when you shake it, it doesn't mean it's faulty. In fact, you can shake a new AIO and it will make splashing noise if you shake hard enough. Water expands when heated, this is the reason why manufacturers don't fill their units to the brim

[@robinhood1577]

Exactly the same reason there is an expansion tank on your vehicle.

[@Brakballe]

@@robinhood1577 Just that I was thinking. You beat me on the finish line :)

[@TopherC.]

Why isn't this pinned as the top comment. One of the tubes or seals will fail.

[@rotor13]

@@TopherC. because he’s a bit of an idiot. He focuses on water evaporating through material - which, unless you’re running an AIO for 10 years and never opened it, the amount of fluid lost is barely enough to fill a teaspoon. What should be focused on when you’re opening an AIO, is to focus on the pumps fins and how degraded the fluid has become. Overtime, no matter what, corrosion will start to form as the biocides and other additives break down and no longer are effective - so as the fluid quality degrades, cooling performance will also eventually degrade as the buildup increases and gets into the radiator tubes and micro fins on tbe waterblock.

[@hippopotamus86]

Mine had so little water left in it, there was barely enough to make it up to the radiator.

[@old_newbie9498]

*ALERT* For people attempting to try this: Make sure you dry any spilled liquid in all of the pockets of the cpu block that are outside of the O-ring area!! Anywhere outside of the O-ring area is not sealed and will drip onto your CPU/motherboard! Edit: Also, if you spilled fluid outside of the O-ring area, there is a channel in the block that could lead fluid to the pump electronics. You must dry that area as well.

[@robinhood1577]

This is why you turn the pump after filling, and certainly Outside of your PC casing before you place the block onto the CPU.

[@joshuahinchey7544]

I always recommend leaving to dry under a fan overnight.

[@chomethod]

all the new experiences and surprises faced in this video, didn't realize this was a learn together vs a how to.

[@robinhood1577]

Absolutely Banging! I did the same thing with my car radiator! 5/5 I am glad to see content that steers new people with water PC cooling! :D

[@aeon7748]

Jufes, I just did this and restored my heavily permeated H115i Pro XT, barely more than year old, back to new status, there's no one like you in space in actually helping the consumer, my respects to you, in my case IT DID actually improve performance!! Again, Thank you!!

[@Scipheord]

This was actually very helpful! thank you so much for making the video!

[@gustavocobra77]

my started to overheat and as I took the cooler out I noticed lots of dust and sounds of low water. Thank You, very helpful!

[@MegaBlackBMW]

If u refill the coolant fluid warm 40-50 degree Celsius in your AiO and then seal it in warm condition, u will avoid any issues with fluid expanding in the future. I think this is the secret of manufactured fill of this fluid.

[@mitch5114]

this is genius I was wondering if anyone tried to create negative pressure before sealing. I was thinking squeeze the lines lol but urs is better

[@VeritasEtAequitas]

@@mitch5114 Negative pressure? You mean vacuum? Don't squeeze anything. You'll notice the level move as the lines are flexed. No, it won't burst if there's no air. That's a bogus myth. They leave an air pocket for shipping below freezing. Don't believe everything you read on Reddit.

[@mitch5114]

@@VeritasEtAequitas sure man a vacuum... sorry... I did what they said and it worked

[@mitch5114]

@@VeritasEtAequitas were you trying to be helpful or sound smart?

[@snow4dv]

Very useful vid, thank you! :) Wasn't sure whether liquid sound in the radiator is the problem but you made everything I couldn't find on the internet clear

[@snow4dv]

Now my 7 y.o. Corsair h50i's still rocking but without new forms of life inside it XD Used car g12+ antifreeze cooling liquid. It's pretty close to the water cooling liquids but way cheaper in my country

[@SutututuuX]

@@snow4dv what did you use? a coolant of a car do you mean?

[@snow4dv]

@@SutututuuX Yep. Still works great.

[@SutututuuX]

@@snow4dv dang, did not expecting someone putting coolant of a car in a AIO cooling system. but they have the same funtions so, might work your way.

[@bestleesinna7702]

I just drilled a small hole in the top of my radiator and filled it from the top. I let it run for about an hour on full speed to get rid of air bubbles. I then plugged the hole in the top of the radiator with a rubber plug about 1mm too big for the hole so it was snug. Whenever I need to know if it is low, I pull out the plug and see if it is dry or wet. If the plug is wet, it has enough water in it

[@AP-514]

interesting. I hope that plug is facing toward the outside top so if the plug ever comes loose it will not Spew water on your MoBO

[@AzenHawke1995]

definitely gonna do this tomorrow. this was helpful. thx

[@Rowrin]

I have this exact same AIO in a build from 2013 that is basically my father's youtube/email machine now. He's recently been getting boot failures due to a CPU temp warning and when I took the machine apart and did a deep cleaning to see what was up, I could feel the liquid in the AIO drain when tilting it left to right. Thing feels like 60-70% empty. Guess over the last 9 years the water just permeated through the tubing/block. Ended up ordering him a 212 air cooler, but will give this a try and see if I can get the AIO back in service.

[@frannybenanny]

Did it work?

[@Deses]

If I were to attempt this I'd use a vise to hold the pump as level as I could and a syringe to add and remove water.

[@MrJackal64]

Part of using any aio on a system is installing it correctly! MSI has an issue with the micro fins clogging at the cpu block and causing cpu heating problems on the older models where the pump is in the radiator, not sure if they have fixed that issue or not. Aside from that installing the radiator with the hose's at the bottom is the ideal way to install to insure longevity of the cpu pump block and avoid air in the cpu pump block. The pump block (if it is on the cpu) should always be below the hose connectors on the radiator in either case hose's at the bottom or hose's at the top. Never mount the radiator on the bottom of the case below the cpu pump block for an aio unit. Should you have to drain the unit it works better if you can vent the radiator. Otherwise it will create a vacuum and will take longer to drain the unit for flushing. Removing the cold plate alone should work as long as both tubes are clear to provide venting. I've watched a few vids where the guy would just remove the fill screw and then sit there and shake the radiator trying to empty it for 15 or 20 minutes all because there wasn't anyway for the unit to vent properly and the same is true for refilling it.

[@Zeioth]

Hey thank you for making this!!! My AIO started to make a crackling sound after some months of use so I guess water just evaporated and air got into the system.

[@MightySquirrel724]

I just got a corsair AIO from a friend, that was having issues. I'll have to try this out. Thank you!

[@Jax-dw3no]

Just drill and tap a plug into the top of the rad. Fill and bleed just like you would a car system. Works great been doing it for years. Also I just use regular dextron car antifreeze. Cheap and works just fine.

[@GhostRider42278]

Do you mix distilled water or just straight antifreeze?

[@Dowhatyouthinkisright]

This was nice informative Video! some good to know stuff! can you confirm later in comment if that was the coolant fluid which we use it for cars? those are generally green but I may be wrong!

[@ronniecole6054]

the green fluid is a proprietary fluid. keeps corrsion from building up. plus dont fill al the way. water expands with heat. they leave a little air on purpose.

[@aaantunes]

You're funny, man. Thanks, very useful and clear!

[@therichieboy]

Glad I found this vid. I bought a Lenovo Legion less than a year ago and there's a ticking sound coming from the cooler. Guessing it's air bubbles.

[@plymouthbiker]

The fluid might be green as there might be an anti corrosive additive included. It might also be a reaction to copper. When copper corrodes it goes green. So that might be the reason. It won't be algae as algae needs sunlight to produce photosynthesis. There is no light inside an aio. I'd say the best way to replace the coolant would be to replace it with coolant for a custom water cooling system you put together or... Maybe some sort of motor vehicle radiator coolant. I've also seen videos of mineral oil used as coolant. But might be a good idea to do some research. Also check the seals. Make sure they aren't cracked. If they are and your using plain distilled water any leak could completely destroy your system. Refill a sealed system at your own risk! Probably better if you have very little money to get an air cooler and ditch the water cooled system. If you just want to repair it and don't care if you f**k up. It's entirely up to you. And if you need to use liquid cooled and don't have the cash to replace... I'm afraid you should really look at selling a couple of items you own and use the money to buy a brand new water cooler. That's my best advice.

[@CeleronS1]

Great video, thanks dude!

[@hellothereboyo]

I've had my h100 for 10 years, only recently has there been noise and sometimes it takes a while to start, its clear I need to top it up, do you know the size of allen key needed to usncrew them? The smallest key I have is not a tight fit so dont want to damage them.

[@mohsinrasul8450]

how long do aio coolers last? my current pc is 11 years old now and the fan cooler has been solid I am wanting to build a new one and want it to last 10 years....should i use AIo cooling or go for a heatsink fan?

[@Jerry1754]

Very nice demo "THANKS"

[@NoNegotiations]

I have Corsair H90 for 10 years now without any maintenance. Will do it soon when I upgrade CPU and Motherboard.

[@stormrider01]

Thank you! Good tipps!

[@ricardonissan]

I appreciate your knowledge...my cpu was over heating so i started my search to figure out why. My AIO is a little over a year old but it didnt occur to me that maybe it may need coolant or air bubbles causing it not to work correctly. If I can't fix it will end up buying a new AIO or just cpu cooler.

[@CownnnL]

My Corsair AIO was installed with the lettering upside down which is oddly unsatisfying to my eyes. I plan on moving my build to a new case. I’m assuming replacing the aio is a pretty simple process?

[@Engwadur]

Great video for refurbishing an AIO, I hate how much we throw away as consumers. But now i realize i have about 4 of these in my house I will probably need to fill now D: What about the pump part, any advice on that? Is there any maintenance that can be done to the pump or barrings?

[@naronaroyan323]

Would it be posible to add a reservoir to it or even a 2nd pumps as a backup? Or would the first pump prevent liquid from flowing pumped by the 2nd pump?

[@allistairadams5477]

The green water is actually antifreeze. It is used in cars rads to keep the water from creating rust. I'm a trade mechanic and resently starting my PC building hobby. Found this incredibly cool that cars and pcs use the same fluid. It smells like disinfectant.

[@drinkingguy3168]

The idea of water cooling the pc is taken from the car world too

[@jamescarter1088]

Antifreeze? Is a PC in danger of freezing? It will be a corrosion inhibitor with biocide to prevent bacterial growth.

[@drinkingguy3168]

​@@jamescarter1088 Propylene glycol + water mixture in an AIO is very similar to antifreeze

[@VeritasEtAequitas]

It's naturally clear.

[@EasternAmerica]

I think so too

[@WizardManFilms]

So I have a question, so what ur saying is every 2 years I have to dump out the liquid and new buy liquid coolant to put in there?? Ofc unless there is gunk In there before the 2 year mark.

[@PaulyV93]

I don't even own a AIO Cooler and I enjoyed this lol

[@goatlord8514]

I was thinking it was impossible to refill these things but I did not think to just take off the Coldplate

[@MrDelvey]

Practically all AIO have an aluminium radiator and copper block, so corrosion is an issue and you should not just use distilled water

[@hippopotamus86]

What should you use if not distilled water?

[@JohnSmith-ys4nl]

@@hippopotamus86 Inhibited Propylene Glycol. It's what the CLC makers use. I think they mix it with water, but I am not sure the ratio.

[@j.petisch]

I do believe you are thinking of de-ionized water (bad around metals). Distilled is appropriate.

[@svan71]

​@@j.petisch deionized or distilled water will leach metallic ions

[@smuludgn]

My old radiator has some sponge like white particles on fins at the edge that connects to water container. Its not leaking but cant identify that white substance

[@terryv8909]

Regarding your comment about performance, you can see a bump for sure. I did not realize that I had an issue until I noticed my CPU was hitting 100 C+ and my system was being laggy. My Be Quiet! after topping it up, my temps are back down into the 50 C (pushes into the 60s under load) and the PC is snappy again. Still not a lot of fluid to add to top it up. In my case, I am not able to install the rad in an optimal orientation which means that very little fluid loss can and will have a big impact. That said, it took the AiO 5 years to get to the point that it did, hopefully I'll get another 5 years out of it.

[@r3tri3ution_z3nith_point_z6]

My Corsair aio has been going since 2013. No problems. Never fucked with it.

[@campusaalst]

Do I need the AIO to be powered on while filling it, cause it doesn't seem the new liquid finds its way into it. I got out all of the old coolant, but I can't get 50ml to move inside easily. That's why I ask, thank you

[@emanuelarriaza3710]

Yes just got my aio re filled it was nasty but after the clean its gonna be good for another 7 years

[@TheSlikstik]

My pump exploded and flew out the window doing this mod :(

[@8Seven65]

Really?

[@Fatpumpumlovah2]

Algae requires light to form, thats the normal color of corsaire coolers

[@trey1478]

What's that piece you use to start the pump called?

[@cadynpool8625]

I have a corsair h100i AIO that I'm trying to fix and I CANNOT get the screws out of the cold plate and I have no idea how to fix this.

[@matic3164]

Isnt the little amount of air suppose to help the for the expansion of the liquid, if u have no air and it gets warm it can leak out i think

[@IvanOoze1990]

coolermaster likes to use those one way tamper-proof screws.

[@trebet5196]

Just opened mine and barely had 3 table spoons worth of fluid come out, also had some black flecks, Im not sure on the age of mine, but sure its over 5 years. Im ording a new one, but going to fill this one back up just to use until the new one arrives....if it even pumps any more.

[@rootsrat]

Thanks, helpful!

[@Stand-as-One_Virox]

Que liquido debería usar para rellenar este tipo de cooler?

[@futureconsequence5374]

I have the "i" version of that model. mine was clean but clear water. interesting it was green fluid in yours.

[@theaaravyt]

This is a very good video and very straight forward! But I’m very bad at PC stuff anyways so ima just take my future pc to micro center every year and make them do it for me

[@Deses]

Microcenter will not refill your AIO.

[@6ix_dizzy]

I like how you fill it from the jug instead of a turkey baster like an og aha.

[@taiiat0]

a small portable Bench Vice might be useful to hold the Pump. clamp it gently and the heavy Vice will hold it up for you so you still have both Hands.

[@robbiexiong3508]

What do you meant by last forever? 5 yrs?

[@ImranKhan_i_k]

great , thanks very much helpful

[@niquedegraaff]

But now there's also water on the other side of the rubber under the copper plate. How do you get rid of that? Because that will slowly spill on your CPU since that part is not sealed. It is enough for months or even years to evaporate .

[@SteelRatVT]

Well explained man! You still game on twitch?

[@LuckyCrown781]

Just a quick question i hope someone can help me . My aio started vaporizing water after 4 years of usage can i fill it up a bit with destilled or demin water ??

[@HappieFaith]

Pulled apart my Corsair h100iv2 and there were actual crystals spewing out of the loop in the coolant. Bunch of build-up in the cold plate. Now I know why it failed lol.

[@magnapeccatrix]

It happens when there are different metals in the loop such as aluminum and copper. Add anti corrosive agents or just some antifreeze (has those in it) with distilled water.

[@filds1]

@@magnapeccatrix This. I got thermaltake water 3.0 performer c on jan of 2017. After 4 years around feb 2021 i was getting insane high temps on my 2600k overclocked back then i used insane high voltage im talking about 1,53v The temps reached 90c in fortnite It was summer time. I was like fuck it opened up the case took off the aio. The rad was light as a feather. It had 1 table spoon of liquid inside. I didnt have any premium liquid what i used was premix of antifreeze. Welp it said it has corrosive and bacterial additives cant tell if its just marketing on the label. But im still using the same AIO. Currently with 200ge the temp dont go above 65c overclocked. Also im using 1.38v on this mf

[@ken.kaneki369]

My computer been down for few months bc I couldn’t figure out the plug ins but now I think I’ve got it and when I initially started it up my liquid cooler made a lot of water swooshing noise but doesn’t anymore after few restarts. Is that normal?

[@hunterhryciuk3964]

This is the best way to refurbish a perfectly good aio

[@TehLuNaTiC]

if i want to fill a new fluid to the system what i have to buy ?

[@cybermx8896]

Can I use car coolant to refill this thing? I am thinking on using Liqui Moli coolant

[@lukecage7003]

what is a good solution to use to refill a aio?

[@vlad3k660]

Thanx , very nice!!!

[@skorpers]

How does this work in terms of Liquid Cooled GPU coolers?

[@Negiku]

3:25 I can't unscrew those at all, either my allen key wrench are not strong enough or the screws are glued :(

[@bobykim5311]

Nice to see a aio from the inside but i would never ever top off the AIO myself. Basic physics: air will ALWAYSmove to the highest point to as long as the rad is above the pump, air will be trapped inside the rad in the inlet chamber. Water will still be cooled as air wont be trapped in the cooling channnels. The chance of leakage after dismanteling will be WAY higher and does not stand up against some air being trapped in the inlet chamber.

[@errolanthonyrespicio9420]

Nice now i know what to do.

[@mikegaming4924]

I think technique is very good, but I couldn't remove the copper plate from my AIO because the screws have stripped :(

[@bluesporeprint659]

You should screw from the center out in criss cross btw not from outside in.

[@big_homie_tay]

I need help so I refilled my cooler all the way and put it back together but now it's leaking everything looks perfectly fine any pointers very regretting taking it apart now

[@jccfrancis]

I have that same model... but it is 8 years old xD...I've never done any kind or maintenance and I already decided to buy a new one, BUT I saw this... so MAYBE... just maybe for the sake of trying this out I can then install it on my wife's computer... what do you recommend? (most likely just throw it away haha)

[@NKNeptune]

did you taste it? im thinking of refilling mine.

[@GOLTURBO555]

Water expands when heated, this is the reason why YOU HAVE TO LEAVE A BIT OF AIR INSIDE IT. PROBABLY, AFTER THIS... THIS THING BLEW UP.

[@TheTakamas]

Excellent video, thx for the lesson, Sensei.

[@mrgreen7754]

thanks to your video, i managed to service mine which is clogged.

[@Acavando]

You have to leave a small amount of air for liquid expansion. Roughly a tip of a pinkies worth. The liquid can compress the air allowing for expansion when it heats up.

[@robinhood1577]

Negative! Liquids cannot compress any air, only air can be compressed and liquids can only be pressurized. I know what you said but, Any air in a pressurized system can only rise to the top of an y system.. bleed that off? and top up? reseal, good 2 go!

[@ShellSide]

@@robinhood1577 as liquids are heated, they expand. this is why water has a different density depending on temperature. as the loop heats up, the liquid will expand. If you have a small amount of air in the loop, the expanding liquid will pressurize that air. If there is no air gap, you will be pressurizing the system and likely have water leaking out of fittings.

[@robertbonzon69]

Air isnt compressed by water, air gets dissolved into it

[@taesssi]

@@ShellSide thermal dynamics laws here lol. Plenty of knowledge on closed loop systems involving just water, and other liquids too. As for the system becoming pressurized, I'm guessing Corsair knew what they were doing and choose rubber hoses intentionally to allow for expansion of liquids in the closed space. The cool thing about all of these systems is that even being closed loop, water will still escape. I'm not a professional in the closed loops category but I'm certain Corsair took all this into a account, as during assembly I bet they have margins of safety that allows for both over and underfilled. Part of the reason why the pump should always be one of the lowest points in a closed loop. Doing that ensures that any air well always stay away from the pump. As for filling, what I saw here would seem adequate for a closed loop with rubber hoses. Now in hard lines you should allow for expansion via a tank, without, you risk damage to the system. Also I really doubt this pump is capable of pressurizing the system above 1 atmosphere. It's a volume moving pump, probably a low power low head centrifugal pump (I've never taken a loop apart to look at it so I could be very wrong). I just figure that Corsair wanted simple but working, easy to assemble and easy to refurbish so that the company makes money instead of losing money on simple stuff like an over filled loop pressurizing and causing damage.

[@Rico_______]

Water is incompressible, genius

[@DaddyElfMan]

one thing you should have mentioned and done is a leak test and to make sure no fluid gets to the electronics chamber. other than that, very informative and good video. thanks

[@danielgamingpc4090]

thx for video ! i subscribe!! 👍

[@warrendemoor9892]

Filling to 100% will cause leaks, heat expansion overpressure, also it's supposed to be propylene glycol not water in those things.

[@chrhadden]

i have a corsair aio.i think its a i80.its been running since 2013. it never gets hot so i havent done anything to it. there has to be some coolant loss but i dont want to open it.

[@DannyGruesome]

I have the same thought but i wonder if its a catastrophic failure or if its shutdownable lol

[@fnordist]

I just cut through the hose, inserted a T-piece and mounted a reservoir on the T-piece.

[@stejonno3122]

thinking of doing this to my new x63 nzxt wanted to add a res is it hard

[@billmichae]

Thanks!

[@chrisliddiard725]

Did it make a noise when it was simply powered up? My old one makes a high pitch whine, but you need your ear actually on it to hear it. Does anyone know what this would mean? I'm about to open it up, just waiting on the tiny triangle screwdriver set. That's a neat trick to get the air bubbles out. BTW I heard on another vid that water expands when it heats up and that you need a tiny amount of air in the loop to account for that expansion or it won't work properly.

[@Void_777]

Correct, the coolant needs a tiny air pocket to fluctuate between pressure differentials in fluid\gas temperature dynamics.💯

[@iainshallish2631]

Umm, I am no expert here but would removing all the air not increase pressure? You cant compress water but can compress gas, a %age of air/gas is needed to regulate the water as it passes hot to cold stressing seals in the process. A wee bit of air wont hurt ')

[@Void_777]

Correct, it needs a tiny air pocket to fluctuate between pressure differentials in fluid\gas temperature dynamics.💯

[@keepingup2952]

Air expands at a much greater rate than liquid, meaning that far greater pressures are at risk, in this sealed CPU cooler system, the more air is in it. Many of these guys are believing that the cooler manufacturers are leaving air inside the coolers on purpose, due to the fact that liquid expands. This logic doesn't make sense if the goal was to mitigate expansion in the sealed system. Could it be that the manufacturers find it difficult to fill these coolers "to the brim", and that's why you can hear the air bubbles inside when you shake them?

[@lakatosnemakal]

best guide out there , i hate submerging radiator etc bullshit

[@ImCalvinr93]

Mine is spewing foam with air bubbles.

[@coolissimo69]

Bro, what happens if you need to replace the liquid, what I should use distilled water with Iso alcohol ??

[@magnapeccatrix]

Distilled water with anti corrosive agents if you have different metals in the loop.

[@adriannasyraf3534]

that aio is going to explode once it is heated up... leave some air in it for liquid expansion

[@harag9]

I just watched this as my AOI is about 8 years old... so watched a couple of others... this is the only one that said NO AIR.... All the rest said 2-10% air.... Think I'll go with the majority of 2-10% air though. but nice to see how this was done.

[@coolissimo69]

@@harag9 So any more info?

[@hippopotamus86]

Good thing the hoses are rubber and they will simply expand slightly instead.

[@raeyyett2996]

Got a cooler recently it sloshes like crazy, sounds like air in the pump and reaches 80-95°C is it possible this could fix it?

[@T2odna]

Did it fix it?

[@PrinceWesterburg]

Distilled Water: 70p New AIO Cooler: £100 Hmmmm....

[@BBond88]

SO HELPFUL, as other commenters have pointed out ill pour a lil fluid out after confirmed no air bubbles to assure room for expansion. My cooler is old and had 4k hrs on it and is gurgling and no longer cooling(like at all) i'll report back my results here.

[@theo3888]

So what happened

[@BBond88]

@@theo3888 it worked a bit. Circulation is better but not as it was new.

[@lateralusman88]

@@BBond88 leave room for water expansion

[@JohnSmith-ys4nl]

@@BBond88 Probably some corrosion in there. It probably needed a total flush and cleaning. If that doesn't fix it, then the motor must be going bad.

[@BBond88]

@@JohnSmith-ys4nl motor feels good still. I think I’ll be fully flushing it this time around

[@69SUSP69]

Thankyou!!!

[@magnapeccatrix]

@Frame Chasers Hello I have 3yo 360mm Asetek Aio and Cpu temp is on constant increase. Pump is working and no noise unless pump block is on top of radiator. Fans blowing cold air and stopping fans not change cpu temp. Stopping pump skyrocket temps. One tube is hot other one is cold. Only inlet tube area is warm on whole radiator. I hear water splash if i shake radiator. What is the problem? To me not enough liquid to circulate or flow is blocked. Thanks.

[@HitLuca94]

Your radiator is probably clogged by an air bubble. You can solve the issue in two ways: gently tap the point where the warm water becomes suddenly colder, then keep following the loop and tap where the bubble lands next. Do it for the whole radiator path and stop when you get to the other tube. If you can't feel warm water moving through (your fans will blow hot air when going through a working radiator, so you will just feel hotter air all of a sudden), tap with more force. This is done assuming the radiator is mounted horizontally above the aio pump, so you don't have to worry about the bubble getting to the pump as it's below it. If for some reason tapping doesn't work, and you tried tapping decently hard, try to incline the whole pc (or take out the radiator and incline that only), trying to make the next part of the water path higher than the blockage. Usually a radiator will have a U-shaped water path, so you should repeat the tilting process three times (long end of rad - short end of rad - other long end of rad). You need to be more careful when using this method, as to not let the air bubble get back to the previous rad section when tilting. The rad needs to be running so have your pc on, preferably with a cpu stresstest running so you can feel the hot air more easily. Make sure you didn't unclog half of the rad only: the fan/s will blow air through both the start and end sections of the radiator, so simply having hot air coming through may mean only half of the rad is free of bubbles!

[@hawky2k215]

Mine fails to start untill I do taps on it then it'll fired up. I know it is air that clogged up. As rad feels lights and emptied. Can't listened that greats as am partly deaf. But I've also noticed if air is clogged in then AIO would do a full throttle all the times even if CPU is at exact idle temps that another hints of showing that air is clogged or less liquids in them. Because when PC is idling then AIO should be throttle down instead of 4'000rpm all the times

[@hawky2k215]

Also I'd always checked in Hwinfo not the HwMonitor as they're useless since don't show it for some reason AIO clocks. But Hwinfo does show that called CPU OPT in the list to see how fast it is doing or running normal is very useful. Thought to give advice 👍

[@blee1997]

can you refill a NZXT Kraken M22 AIO cooler?

[@T2odna]

Did you do it ?