Samsung 350v No POST, Modding BIOS files - LFC

[@Alberrttoo]

This guy is a proffesor 😂😂 He talks step by step and answers your question without him knowing. You would even realized you finished the whole video listening to him talking 👍

[@azuararuiz]

I am a primary school teacher in the mornings (28 years of activity, I have 2 more to go). I also studied electronics and it is a satisfaction for me to be a "student" of young Graham on this channel. All the best.

[@JamieHitt]

Your skill and your talent are indeed impressive. But your abilities to teach and communicate are truly phenomenal. A rare privilege to find such instruction this side of a pay wall.

[@markharrisllb]

Today I leant DDR3L is low power, I thought the L stood for laptop. 😳 I really like how you acknowledge your subscribers and Discord members who contribute to your knowledge. They certainly know stuff that I didn’t know I didn’t know. I've complimented your approach and how addictive this channel is a couple of times, but you also have amazing subscribers. In the comments there’s a wealth of information and very little ego. They are people who seem to genuinely want to share information.

[@VndNvwYvvSvv]

Low voltage, yes. Compatibility between slots/board and the memory cards can be either direction, both ways, or neither, but without knowing ahead of time, just uses what's spec'd.

[@reecebower9934]

I really like that when you don't know something your not afraid to say so. A lot of youtubers try to act like they know everything.

[@ultraviolettp3446]

Congratulations on your efforts - you and Louis Rossman are real technicians - not some fake fool like Carey Hozerman who is essentially a card swapper who could never operate at the level of competence you show! Bravo!

[@tomnorman5461]

Hozerman is way too obnoxious and condescending, thinks he's "all-that"!

[@fichambawelby2632]

There is nothing in the world but 2 things, which makes a man change his rigid face for a smile: one is when working in a dead laptop and suddenly shows BIOS screen; and the other one is from the watchmaker when mounts the watch and the scapement wheel begins to move regularly. Both are ways to "put in life again" a machine. That's your face in today's video!. It is always a pleasure to see something like this. Congrats, Graham!.

[@SiETechNotebookReparatur]

BIOS works are one of my favorite works, have also often shown in videos. I am often asked to make a video about BIOS repair, but it is not feasible to make such a video that could generally show how to repair BIOS firmware. It is only practical examples that can be shared and with new generations come new problems and knowledge. There are also differences between Intel and AMD (AMD has eg. no Intel ME) With experience it gets easier and easier, you understand the logic behind it, but handing over the whole thing would be extremely difficult. Practice makes the master :)

[@ErickBuildsStuff]

@SiE-Tech Notebook Reparatur, I think I will drop an email to you tomorrow. I would like to get my ASUS laptop repaired. It has the same issue after a failed windows update that also brought with it a bios update. That bricked my laptop in a single day.

[@markanderson2904]

Agreed. It seems that if one new how to write a BIOS and could decode the "program" in the BIOS, one might be able to discover all those things.

[@sp_charles24]

Ultimate tutorial about flashing BIOS file and editing it with the old ones, which is precious. You just shared it with us free of charge. Hats off. Now have a little deep understanding of the importance of BIOS.

[@DanielsGameVault]

A tip I have when doing BIOS "rework" is to leave the original chip as is and always have some new, blank chips on hand and mess with THOSE instead. That way, you're sure it's not the chip itself that's faulty by having some bad blocks or other sh!t like that - highly unlikely, but still. As long as there's that 0.01% chance that there IS something wrong with it, you've covered that possibility too. EDIT: I think the KBC in this case is the ENE chip itself. You can tell if you see the traces from the keyboard connector going to it and I know I also read somewhere that it IS possible through some freak adapters and procedures to actually flash this ENE through the goddamn keyboard flex connector :)))

[@jerichowall8185]

Always learning something going down these rabbit holes. It helps when the user tells the truth about liquid and accidental damage

[@Adamant_IT]

Yea, in this case it didn't matter. Likely that liquid damage is really old. But too often I've wasted time on testing RAM modules when I'd have gone right to mobo repair if I knew there was liquid damage to find.

[@stanpotter7764]

Great video! I've been a server/storage/network guy forever, but recently got "backup desktop support" added to my duties. While I shouldn't need to get this deep into repair, knowledge this definitely will come in handy. You are very skilled! Very well explained, and I enjoy your dry sense of humor! 😂 Thank you!

[@Adamant_IT]

Cheers, if nothing else, I think there's a lot of value in people just knowing that these methods exist.

[@Echo3_]

i`m in a similar roll but i just hate trashing motherboards over what might be a 1.40 in parts and a little know how.

[@iTCXtreme]

ME Region is within the main bios and it only on Intel platforms logic board/cpu. The 2nd bios is EC or Recovery. Some business edition laptop such as Fugitsu has 2 bios ic, main (8mb) and ec (1mb). Some boards EC bios is within ENE, ITE controller, which requires programming via keyboard connector. As always a great video 👍. Take care 🙂.

[@elizabethtorres6069]

Graphic Card.. add heat to loosen, then replace it.. I have heard doing so helps.. Please do not give up! This is one of the reasons, I watch you work.. You got this Graham.

[@adammesic]

And I thought I knew about computer building and repairing. I know s***t! This is just a next level. You sir have "passed the game".

[@graphicsgod]

Exactly! I'm used to finding a bad fuse or resistor or chip and just replacing. Never thought the BIOS would go bad (corrupted) and cause the laptop to not start! I usually just check things with a multimeter, and go from there. 🤷‍♂️🤷‍♂️🤦🤦

[@Tefery]

You always leave me freaking out with each of your videos, you are the only one who is able to teach me something useful, and also things that I did not expect at all.

[@kramsniggah4333]

How on earth do you store so much knowledge, skill and experience in your head? wow dude.

[@scavenger888]

This is one of the best episodes yet on restoring the BIOS and retaining the original parameters from the corrupt BIOS. I hope you can show us more on where the Ethernet MAC address can be found and transferred to the new BIOS once you have mastered the UFEI Tool.

[@mickywoods]

Amazing stuff - well above my head but great to watch how you work

[@101ventus]

Brilliant vid. I have built my own PC`s and I guess like most of your viewers I have a nerdish interest in how they actually work albeit at at superficial level. I too will never do any of this stuff but I find it interesting and you have a very watchable style.

[@MarkusHobelsberger]

One thing you should also point out is security. A random bios file from the internet could very well contain malicious code or some kind of rootkit. It's not very likely but you never know.

[@sooraj_007sksiaoao]

what malicious activity it can cause??

[@christopherjackson2157]

Definitely a possibility. Tho it's hard to imagine that being a productive use of someone's time. Especially someone with that degree of technical skill and knowledge. Still can't be ruled out. Ur right it should at least be mentioned.

[@spottedtango]

it's possible. Is it a likely occurrence or even a likely vector? no. The technical skill to build an effective rootkit that can live in 4MB or even 6MB that can interface in the way it needs to without disturbing/breaking the original functionality is a tough ask, not impossible, but nor easy. Also you have to consider that there isn't a whole lot of incentive to use something that specifically targeting and sophisticated on public forums. People making bios level hacks are doing to to target a government issued model for international espionage, not to steal grammy's recipes.

[@nyanpasu64]

There have been UEFI rootkits discovered in the wild, such as CosmicStrand.

[@StephDab]

That was very instructive. The BIOS modding part was interesting, I loved it ! I used to flash BIOS via a ch341 (old version, the new 1.7 version is on his way, thanks to your previous video), I already known the procedure to get the windows product key (it's pretty standard, address 006CD00 in any single bios bin file via an hex editor) but I didn't paid attention to MAC address or s/n. That's a new path for me to explore.

[@Echo3_]

There is still a lot of questions I have, things I may have missed or forgotten. So I like the way you do this

[@VndNvwYvvSvv]

I always flux for removal too, yes. Not as much usually. It does help a bit with initial heat transfer, but at melting temps it doesn't. But it does allow better contact from iron to solder for primary heat transfer, which makes a huge difference.

[@frankbumstead3838]

That was good stuff. I know this data is stored in the PC BIOS but now know a lot more about its location.

[@victorzedwings]

Absolutely! But sometimes EC firmware mismatch may play a bad joke, till you sync it with the BIOS version.

[@Ed31003]

Hello Graham, great seeing you over on PLD's stream

[@train4905]

Dear sir,i thouraghally enjoyed this video, I really liked,your genuine warmf to the audience,your cracking sence of humor,.the genuine sence of angst and then releif,and also your genuines about agnoleging other peoples knowledge.superb work sir,please keep up the superb vids,thanku steve from the uk.

[@warenmann1042]

Excellent video, I like the direction you are going in your repairs. Thank You...

[@uthayakumar4999]

Theres a clip type adapter to program the bios chip, you can attach it directly to the bios chip without removing it from the board and flash, saves lot of time and effort.

[@SimonQuigley]

There is, and I have one of those, but it's horribly unreliable, and I have given up after 20 attempts of fiddling with the clip and just desoldered it, and it works first time

[@whodatdere1]

Flux helps a lot for removal of components in general since there is little to no flux left after the cleaning process. Flux will ensure the metals stay fluid and also prevent instant oxidation that causes the dissimilar metals to separate and potentially burn that causes dull finishes.

[@Lardzor]

When first I read the title, I thought the power supply was outputting 350v. No Post would be no surprise.

[@bobmcbob4399]

Great job, this is a nice high level overview of BIOS manipulation. Gives us all a starting point if we ever need to do something like this.

[@danarepouille1381]

Excellent video, Graham. One minor quibble at 43:43, when you blurred out the Windows license key, but you did not blur out the Hex values of that key. Not a problem, though, since I am sure it is just a generic license key anyway.

[@chachamarwa6047]

yes! you could just twist the endianess out of that hex ag aquore the key, but as you said its not of a big deal

[@dandan1818]

been watching your vids for last few months as recently found you with have a few system with dead bios not really messed with them yet but im finding all your video interesting and informative and also that it not always the end with any system or laptop if bios is corrupted/dead thank man keep up the good work

[@viduravishwanath7847]

I just had to leave a comment. you are doing a great job mahn. teaching everyone here. appreciate it a lot

[@Adrian_Finn]

Yeah, this is a hard one to teach because as you said there is so much variation between devices, I had to do a similar thing with my asus motherboard and had to extract the serial, mac address etc from my dump and bring together the Intel ME, Gbe and capsule file to produce a custom bios using both UEFItool and FD44editor to achieve it. I think the thing to drive home is that there is an excellent community of help out there, we have the discord servers, badcaps forums to name but a few and of course google. Really enjoyed this, this is going in my pc repair playlist to refer to later.

[@Echo3_]

besides the troubleshoot and repair, the way you teach codes and what everything else does as well is very helpful!

[@DJaquithFL]

32:48 Eureka! You can't beat that feeling. 🥳😁

[@michaelthompson9798]

This is well above my knowledge base 🤯🤯🤯 but is amazing to watch and interesting to pick up some understanding just some of the behind the scenes mastery of the often abused pc

[@forbiddenera]

SuperIO actually specifically (at least nowdays) refers to a chip providing serial and parallel IO. I know in past times they generally handled more or the chip that does handle parallel and serial handled other stuff on older boards. Never realized this until my new motherboard which is a pro board and has a specific superio chip specifically for parallel and serial IO. Which is fkn nice to have on a modern pc for sure.

[@pagansunburn470]

After watching your videos, I purchased an RT809H with adapters.

[@ikemkrueger]

46:33 Git uses a very clever algorithm to help you to identify a not working commit called „bisect“. You could apply them here too. You divide the modules in an upper and lower half. Change the lower half with the new modules. Does it work? Issue was in the lower half. Does it not work? Issue is in the upper half. And then you repeat that cycle.

[@lemagreengreen]

Never worked on a Samsung laptop of this age but this reminds me so much of older cheap HP models. Hate working on them too, all laptops should be two piece construction.

[@15fakeaccount]

I think that was pretty spot on guide of transferring data from old bios to new. Of checking serial numbers, how about checking stickers on motherboard and comparing these for BIOS' information screen?

[@bennaambo2716]

he said at the end the UEFI Setup doesn't display any Serial Number Information

[@kevinmalec4977]

I use flux for removing chips. it really doesn't help with the heat transfer, but it leaves the solder clean on both sides rather than globby, which is helpful for later

[@dimitarkunchev]

In my experience it definitely helps with heat transfer. Depends on the flux probably, but the stuff at work speeds desoldering a lot.

[@geraldh.8047]

Thank you for showing the proper way to keep the BIOS special configuration things!

[@rohinchand]

very well deep effort for making this video thanks graham

[@zimbab5748]

YOU ARE BRILLIANT MATE. Thank you for sharing, I have not doubt you have helped a lot of people, including myself. A lot of good karma coming your way for your services to the people. Thank you!!!!!

[@elizabethtorres6069]

🎈🎈YES YES YES, IT'S ALIVE🎈🎈 I HAD FAITH IN YOU GRAHAM.

[@stephenb4411]

Hi Adam, great video, very informative and learnt a lot. Thanks

[@techbuildspcs]

Learned more from this video than i did from 3 semesters of a private university :( Thanks Dude!

[@TENGILL]

Great video! I am learning so much.

[@HyenaOfDoom]

The 'KBC' file is for the superIO chip (the ene chip) its actually a full microcontroller with its own flash on board based on an 8051, you can program it with a standard ch341a by soldering a few wires to the keyboard connector it is the keyboard layout but is also the complete firmware that controls all the ancillaries such as the power button, LEDs and fans.

[@funhaveatutti]

The RTC Reset work if you power cycle the laptop after soldering a bridge, that reset is more in deep than disconnect the bios battery, that clean also any bios password (sorry for my bad English)

[@alaahaidar8029]

This one will enter the history man, great job 👍🏻👍🏻💐

[@zadekeys599]

Flux lowers the melting point of solder, so it is always a good idea to use it.

[@nickdatyner1519]

This video was incredibly useful. I had a Lenovo Yoga S1 (LA-341P Rev 1.O mb) which only started fan briefly and blinked keyboard background LED. I'd removed BIOS chips and read them and compared to ones I had downloaded. Based on your comments it looked like the downloaded ones hadn't been initialized. Decided to reprogram using a CH-341A programmer. Used Neoprogrammer software since AsProgrammer version wouldn't program reliably. So programmed and soldered the two BIOS chips U8, U2202 and bingo started up . Had wondered about the KB9012 Super IO being bad but was the BIOS. Also everything seem fine so maybe other info like serial number etc is stored somewhere else on this machine. It is from 2013. Thanks!

[@KevinJohnson-je1pe]

Wow my head hurts but in a good way and I have learnt allot. Thanks for an other great video. I use flux for both soldering and de-soldering just because that's just the way I have always done it. Keep up the great work

[@tongravity5668]

Top content as usual,good job!

[@bayandamabuza6587]

Followed you for sometime now And 3 days ago I had no backlight in my Samsung laptop up until today , I short circut the resets and backlight restored

[@catcam]

Thanks for that ! All best from Croatia.

[@jeremiefaucher-goulet3365]

I'm amazed how there are so many corrupted BIOSes

[@RSTVlog87]

those BIOS chip actually using i2c interface (sda, scl). you can read write without desoldering using arduino or raspberry pi (connect cable to sda scl gnd pins). if the chip doesn't get stand by power just inject bios vcc pin with bench psu, some board need grounding master oscillator to prevent other component from running but keep stand by power.

[@gregorymcclure7993]

Excellent video just learned something new! Keep up the good work.

[@mikerooney3307]

the red arrows just flew over my head. just like the 2nd half of this video went.

[@ArteiusTube]

This kind of video is so interesting, i can't stop looking, even if i have work to do :D

[@AnonymousRepair]

Nice Video, The only thing is that using extremal display doesn't always work, Most of the newer laptops will not give you an output to external display from the bios, I stopped using that option long time ago, Now that there is no more caps lock lights or num lock lights on the internal keyboard from laptops I just use external usb keyboard to test if num lock or caps lock works. other good one that works well is ctrl+alt+del you should be able to detect the reboot .👍

[@demiankeaough4616]

WOW! Great video, this is how youtube should be!

[@dcamatrix]

Nice one Adamant IT.

[@ZimmyantzGaming]

Great content, love the information given, keep up the good work.

[@nticompass]

Have you looked into using an "alternative BIOS" like coreboot? I don't know this laptop is supported by coreboot, but it would be neat to see a video about that. I have a ThinkPad T430 that I flashed with coreboot. You can use me_cleaner to sort of remove the Intel ME, or you need to dump your original BIOS and inject the ME region into the coreboot ROM.

[@markvvelsen]

Fantastic video Graham! Doing more and more of these repairs and this is a new thing I've learnt from you. To be honest you really extended my knowledge over the last year and made me invest quite a lot in cool gadgets and things to repair Laptops and other electronics. I really want you to know that I think I'm not the only one that learnt a lot from you and your relaxed way of telling / explaining these things. Thank you for that!

[@tomaszski9818]

Great video, good job. I have learnt a lot myself. Waiting for more videos with bios files and ME region stuff.

[@darattaqwa]

Excellent video, very beneficial, very good teaching style, all steps explained in easy to understand manner, learnt so much, please make a video on cleaning ME Region

[@jonathane9403]

Congratulations! Handled masterfully.😊

[@WackyT08]

Good information, Adam! Thank you!

[@ovalwingnut]

Very interesting. I didn't know a fair amount of this. And I'm really smart! Cheers.

[@thereallantesh]

I found this pretty fascinating, and for sure not something I'd want to tackle myself. I don't mind flashing a bios on a desktop PC, but good lord the process for that laptop is crazy. For the time you have invested the repair probably wasn't cheap, but I'm sure the owner is satisfied with the results. You did an amazing job on it.

[@dougler500]

This was SO informative! Thank you so much dude!

[@Fantazier1]

This is timely information for me as I was wondering how one would go about transferring Bios System Information from one machine to another. Recently had my Computer Tech guy change out the motherboard on my desktop because it also would POST. I have to wonder if this was the same problem. I've never worked on a motherboard before so I was leary about messing something so I let him do it. New motherboard shows as a HP P6, but my old motherboard was for an S5-1310t. Thank you for producing this informative video.😀

[@crylune]

Can't wait for the next installment in the Basic Bitch franchise. What will be called a basic bitch next? Tune in to find out.

[@mrlithium69]

Big credit where credit is due, 99% of people dont know how to do this.

[@mikewarnes9830]

Love it, great information and entertaining too thanks

[@erickvond6825]

When trying to resurrect a laptop like that I'd recommend bodging in a tactile switch. That makes it easier to reset it later on. It'll save you heaps of headaches.

[@jerry_f1298]

sorry for asking, why a tactile switch? and where? what's the point of add it?

[@FR4M3Sharma]

Love the way he explains every tid-bit, my only gripe is that the video becomes too long even though I watch him on 2x.

[@Adamant_IT]

In retrospect I should've split this one. The first half is basic No POST stuff for repair-beginners, and the second half is mid-tier BIOS reprogramming. Two very different levels of repair.

[@radio-ged4626]

I would say that flux will help in the removal of s.m. components. The solder melting point is slightly lowered by adding flux, or should I say the temperature at which the solder becomes fluid is lowered. Why wouldn't it help? De-soldering is just the reverse of soldering after all. Edit: Very interesting to see how you combined the files on the command prompt with the binary switch and then how you split them apart using a hex editor. Great video.

[@radio-ged4626]

@Damion Manuel Hi, of course you're right. It only lowers the effective melting point because you don't need as much heat when the oxidisation is removed. The melting point of the solder always remains the same in a given atmospheric pressure if it is not chemically altered. Full pedant marks to you. A gold star is in the post. :)

[@kztech1319]

I do think that you need to flash both chips at once if you are gonna do a BIOS reflash. If your BIOS dump is a different version than your current corrupted one, flashing one chip may not work, and that's probably what happened. I have a conductive ink pen that I can simply draw traces if I want to temporarily connect something. The ink comes off immediately once you apply alcohol to rub it (Apply clear coat on top if you want it to be permenant). That said, those pens really like to jam over time and both of my pens have jammed already, so I have to take open the pens and apply the ink with a small screwdriver, but whatever For 24:27 , in my experience it definitely helps to apply flux if you are removing things with a large surface area with a soldering iron, it helps more evenly distribute the heat of the soldering iron and you can much easier use a flat blade tip to remove all 4 pins at once and lift the BIOS chip up on one side for instance.

[@northfixtz]

Excellent video,,you added alot on bios cases ...Great Job

[@parochial2356]

Graham, great work. Please plan on doing a more in depth vid on step by step procedures, now that you've got proof of concept.

[@umaikeruna]

I'd love to show this video to someone in the early 19th century.

[@MiguelGuatemala]

Excelentemente explicado y entendido, muchas gracias!!!

[@djpet2009]

Thx so much ! You are really a good coach to understand things that mess up on devices !!!!

[@shahjul4596]

Really knowledgeable video sir. Love from India 🇮🇳 ♥ 🙏 Thank you. 😊 Pls make more videos about bios.

[@Marc_Wolfe]

Love it. The second half.

[@P.M.88]

love your vids, i micro solder for a living. i do shout flux at the screen an awful lot though haha. the chips will seat so much easier id you did, i really do promise. great vids though keep up the top work. just subscribed

[@j1e1r1r1o1]

good job...Congrats...and thanks for this fully detailed walkthrough!...again...Respect!

[@Rorschach1024]

I think I would run a compare against the two bios files to see what the differences are.

[@ErickBuildsStuff]

@Adamant IT with those same ceramic tweezers i desoldered and swapped many 0402 package RGB LEDs. It's super hard but once you get to practice, any component can be worked safely. Metal tweezers didn't help in my case as the LEDs plastic shell melted.

[@ElektroTechNL]

Will be nice i need to learn this also to transfer the bios codes. A video will helps me allot. Great video!

[@etw.leonelle]

Thanks for scooping very important section in BIOS which I suffered of too much and I ended up by writing these values manually using some DOS tool and official tool provided by the manufacturer such as HP which facilitates the operation, BTW HP has more information to be written other than the Product Key, SN and the LAN MAC address. My question is how to know if there is another BIOS chip (other than the main one), and I guess you addressed that by finding UXX, is that quite enough; as you know many BIOS binaries on the internet don't include the sub BIOS binary or at least don't mention that there is another BIOS memory, only the main one binary file. Note: In my experience writing BIOS credential values (HP platform) is irreversible