Laptop comes ON but no picture, Bios flash update guide

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[@brogren802]

Nice to see you again sorin. You are a decent man and your videos are fantastic please keep them coming. I've learned tons from them

[@Vinnie2x]

Excellent Zorin! I've got several units with shorted mosfets that do not charge and look forward to you SHORTING the 1st and 2nd to Further Your Explanation. NICE! thank you

[@adrianteo5844]

Multa sanatate.. sunt foarte onorat sa te urmaresc.. as fi dorit sa te descopar mai de mult timp.. dar niciodata nu este prea tarziu..am urmarit aproape toate reparatiile .. WOW.. am invatat atat de multe lucruri utile.. un adevarat PROFESOR

[@electronicsrepairschool]

Multumesc :D

[@108Marlin]

Thanks for the video .great tip .learnt loads just by watching your videos. Thanks Sorin

[@ANASABUBACKER]

i used this method. worked perfectly. thank you Sorin Uncle.... GOD BLESS YOU

[@abcdude8784]

I got all my satisfying repair experience because of your videos... Thank you

[@tinkmarshino]

Just a quick thank you Sorin.. I just turned 69 years old on the 6th of may and you have taught me so much over the last two years that I can never repay.. Carry on my friend.. and thanks again!

[@AbrahamFoamXgen]

You are like a magician. Awesome job.

[@premKumar-rw6kw]

What a clean Justification of the fault in pin point...Great Man

[@OverlandOne]

I learn so much from watching your videos. Thank you.

[@prabhashgupta9582]

Very nice video I am always confused about bios flashing but there is ALWAYS something to learn.✌️

[@arnoldeduardodesousatulomb6395]

Hi Sorin am a big fan thanks for all the knowledge (South Africa)

[@MrDinakdakan]

Wow just like that, meanwhile I desolder bios reprogram with external programmer, good to see you back, need mroe vidoes

[@ToolboxDiaries]

welcomeback Sorin.. from philippines here..

[@achcom312]

Gud am sir need pa ba ng laptop tech dyan ,,apply ako

[@phinehasantwi9615]

Thanks a lot for your educative videos, am able to repair well and fast now...

[@samsonkasumba78]

i have fallen in love with this guy just by watching 1 video...i wish he was my dad...we wud be repairing stuff together...i have gone all over youtube and back to find someone with good repairing skills to learn from...i guess i just found my guy

[@antondewaal8509]

Thank you for sharing your knowledge. Lots of respect to you for taking the time to make these videos. If i may prompt you two questions I would appreciate it. 1. How can I get into Bios recovery as you did with the "B" key on the HP laptop to update the Bios. This Asus laptop keeps booting up in a Bios loop. 2. If suspected that the circuit is down to ground, how can I eliminate which component is the bad one. Nothing is getting hot except the processor, but the motherboard is removed from the laptop and all plugins removed.

[@nakipelivan4007]

Nice sorin its the professional man for this job thank you.

[@brunosulikowski]

You are AMAZING. I wish I could ask questions about issues I have with my dead laptops.

[@zomaardan]

Everybody in repair only take and dont give. You never get help. They dont give a shit.

[@robertisaacs5122]

Enjoyed the video. Thanks for your time.

[@randhawaharjeet3483]

From the experience of your previous videos I thought that you will say it's a graphic issue. 😀😀😀. But a nice and simple solution. Thanks a lot teacher... 👍👍

[@Mr.Smith_Mr.Wesson_andMe]

YES, exactly same thought 😎

[@denizgoksel]

Nice fixing thank you for sharing👍

[@ohmware2020]

nice job, still waiting for videos doing bios programming using the harware method 😁

[@kidsaccount4575]

The good thing about Hp laptops- They have error blink codes on startup if there is an issue so trouble shooting is slightly easier for the end user ☺️

[@joshclark6449]

Would love say yeah it works but sadly did not work for me but thank you this helped me get an understanding of it all

[@lavelani2674]

hi dear friend, many thanks for your great videos, i am following your videos since you have started. I do repair electronics gadgets such as laptops.tablets,game consoles, Mac-books etc. your videos have inspired me geat deal . your understanding on any electronic circuit board is great, please give me advice how to upgrade my knowledge to your level.

[@kqsystemzrecordings]

this was the best video I seen for this particular issue.

[@cecilmiller2387]

Thank you Sorin this helped with a solution to fix my Dell Inspiron 1440.

[@onutuioan2112]

Nice videos mate, I really love them. You are the perfect teacher that I never met to the university. Anyway, what should you do if you have the same problem on the asus laptop, because on the asus laptop you cannot update the bios the same as on hp laptops. Should I reprogram the bios manually, I mean to unsolder the bios chip and try to reprogram with the help of some flashing tools?

[@justinkv02]

thanks friend,good info

[@KarenSmith-ef9kk]

Nice job, reflashing bios without showing off, like those, that think it makes them look cool removing the chip from the board for reprogramming.

[@mjarefi]

Excellent, I had to open the entire Lenovo laptop yesterday because of the BIOS programming

[@ZadaTec]

As Always!! The best man on KZbin:-) Question: Is there any way to flash recovery like this method with Lenovo/Dell ???

[@KarenSmith-ef9kk]

Go look on sites if not you will have to make a recover disk from scratch with bootable dos formated disk, bios file, bios writting program and a modified .ini file to tell the board what to execute and write..you may just see a black screen while rewritting the bios, till after the computer reboots....ence the it's name is blind writting. There's plenty of info on how to make the .ini file on the net if you look around, that was how we recovered a bios back in the day...this is old school stuff from the 90's. Sorin's probably been doing it that way for years too.

[@olivermate9353]

Cool Will test out soon on a HP .

[@tomjones4145]

Fantastic video / thank you for sharing

[@loco6343]

Simply Amazing

[@JunPTechnician]

That's nice tutorial sir thank you for sharing this

[@michaelscottcutler3627]

Thanks, dude. Cool vid.

[@MAYAPOGS]

your the legend sorin..

[@tablenovo10]

Hi, I'm back had a little problem with my tablet or KZbin, I'm thinking KZbin, it delete my subscription, all mixed for now, this is a great channel, I'm all smiles again 😊😊 👍🇦🇺

[@jamessmith6402]

Very interesting video 👍 thanks

[@zafarjoyia2418]

Thank you. It worked

[@jamelmans62]

great...Thanks for the tip !

[@rodwellmatsaure7217]

Thank you teacher 👏

[@gretchencarterdpm8903]

OMG!.... THANK YOU!

[@winnerd6772]

Thank you..!

[@christozed]

YOU ARE AMAZING

[@abdullahxo1689]

Hi Sorin! Your channel is full of awesome videos! Thanks! Why you did not check with external monitor to see if it works?

[@fareselamine8115]

I was thinking the same thing as well! Maybe the laptop does not have an HDMI output? I was also thinking why not test the voltage around the monitor's cable, or even unplug/replug it and if all else fails hook up an external lcd panel to test with. I don't know though, maybe that requires compatible driver with the external monitor?

[@ripe_apple]

Excellent Video, 73's

[@Martin-ot7xj]

Hi there , it was perfect tutorial video . thnx

[@uniquestudio9794]

thank a lot sir i love you soo much to help me

[@aimelapierre5705]

This one wasn't to hard of a repair nice going sir

[@claytonmorgan8625]

Great recovery Sorin, keep up the good work!

[@TofuCS]

Great video , another good lesson :))

[@REDDOGLewiston61]

That's funny I have to hp's on my bench right now that are doing the same thing. I will try that bios utility.

[@AnonymousRepair]

😂😂😂😂😂😁😁😁😁@Sorin I am not a hater nor do criticize your work but do like stuff to be repaired the right way, If you short both mosfets it would still not charge because the BQ IC sense between the two mosfets as you can see on your diagram that you have showed. The BQ IC is quite a smart device, It will shutdown the two mosfets just to sense if one of the mosfets is shorted by using the sense line between the two mosfets, I have tried it before. thank you for your videos 👍👍👍👍👍

[@jbvtechnologies]

So true man 🙌

[@alaster33]

Hello Sorin , great to see your going strong , I just wondered as I have an unrelated fault on an iPad mini 3 , I soldered a new charging port and screen connector, it charges but only on one of my 5 working cables which has got me scratching my head , I changed Tristan chip but put old one back because not even one cable worked ....PS I have tried new battery too, I wondering if you had any insights please ?!?

[@zx8401ztv]

Nicely recovered sorin :-D Do you know where the code is for the B key? protected area of flash or inside the super i/o ?

[@sergelavallee913]

Good to see you again Sorin! And please come more often. I'll tell you why. You see when i open my shop and repair, instead of repairing while listening music, it inspire me to repair and listen to your videos while i'm working. So if you don't put more videos, when i repair i have to listen old videos of yours. It helps me. It put me in the mood you know? So please make more videos. Thank's Take care Sorin. I wanted to flash my bios of my compaq presario but the firmware is not on the net anymore. Not available anymore. Can i save it or not? Thank's

[@B9NE]

I'm sure if you look up the specific bios you have you might be able to find an update official or unofficial. If you can go to the bios menu you can see which one it is.

[@sergelavallee913]

@@B9NE I know what kind of bios but on the net the companie discontinuated the firmware so i have a PC with only the fan running cause the bios is dead. I have only one solution is to find the same motherboard defect on something else and take the bios from it. Beleive me i've tried to find that firmware but it does not exist anymore. I can't go the the bios menu, black screen, bios is dead. Nothing start, the PC won't start cause it's the bios that orders it to start and the bios is dead so only the fan turning. Thank's anyway.

[@ODRACLIVE]

Thanks!!!!

[@abdulagoro8761]

Thanks for sharing your knowledge I’m a fan of your video shows I have aToshiba satellite laptop the power comes on with the logo and it’s booting up what’s the best step to clear this fault ?

[@abcabcjelly]

thank you mannn

[@sleepwalker6825]

Had one like this the other day Sorin ... When switched on No HP BIOS screen , Weirdly when I click ESC I would see "Pause StartUp" nothing Else .... Reflashed BIOS using Windows Key +B and BIOS Reflashed Fine . Got into Windows blah blah blah no problem ... Turned it off 20 minutes later Turned it back on Exact Same Issue .... Opened Her Up took out the Battery ( not BIOS ) Main Battery and Voila has Worked Fine Ever Since .... Also when the Fan is spinning out of control usually Does mean the BIOS is not Controlling the Fan Header too ... Also that was Windows Vista Not 7 Sir ..........Thanks for Vids Sorin Noel

[@jbvtechnologies]

so good, good example man, when you get a higher fan spin , probably the bios fault

[@samgibson100]

you are the boss.

[@baguiotechnician]

watching sir sorin.....

[@ghislainriou9560]

Good day Sorin what is the model of the dc power supply you using for testing thank you and good work as usual . Have a bless week to your team as well ;) looking forward to your reply.

[@rickyhadley2797]

well done you explain a lot my question is do you reinstall the old ram and if you do do you clean it with an eraser?

[@chumatez]

Nice one

[@superherodude6665]

This is very helpful,i have the same problem now and im having a problem making my usb bootable, like when i download the bios it doesnt show me the option to create a bootable usb just the location where you will place the installation and thats it that is why i cant continue anymore, plus im not sure if windows+b will work for me or just b only, my laptop model is 14s-dk0136AU

[@Marko_Maxa]

nice, liked! 💪

[@SiETechNotebookReparatur]

Hi Sorin, thank you for being attentive to this second-mosfet problem. However, while a gate-short can indeed give this failure, in practice they are almost always drain-source short. The reason why the gate drive is then turned off by the BQ-IC is the MosFet Short Protection feature. Quote from the datasheet: 8.4.18 Inductor Short, MOSFET Short Protection The BQ24725A has a unique short circuit protection feature. Its cycle-by-cycle current monitoring feature is achieved through monitoring the voltage drop across RDS(on) of the MOSFETs after a certain amount of blanking time. In case of MOSFET short or inductor short circuit, the over current condition is sensed by two comparators and two counters will be triggered. After seven times of short circuit events, the charger will be latched off and ACFET and RBFET are turned off to disconnect adapter from system.

[@AnonymousRepair]

Yip 100%

[@asv5769]

to be more clear to others, ACFET is the first MOSFET and RBFET is the second input MOSFET.

[@IsaacOLEG]

Hello, I amtrying to understand the Mosfet drivers, why an how (find a very neat complete curse on Power Mosfet drivers kzbin.info/www/bejne/pZfCp2WEastqbpo) I get about half of it, lets say... what is meant by "a certain amount of blanking " please ? thanks. I want to understand what makes the charging port closed in case of first mosfet bridged drain-source. I undestand that due to the different possible configurations there is no universal answer. but I have that on an Asus X540L . thanks for reading me ,)

[@adedeky8976]

@@asv5769 TERIMAH KASIH ,, SAYA BARU TAHU JUGA

[@eldoradocryptoz]

Your level of experience Sir Sorin is outstanding. Pls tell me ur biography when you have the time. I want to be able to tell my kids about Master Sorin from whom I've learned so much. Through you i've become electronic Master myself. Thanks alot for everything.

[@shaunmorrissey7313]

I learned something today, that makes it a good day.

[@therealspixycat]

The bq chip reads the current through the shunt resistor and kills the second mosfet: I think the sole purpose is to limit the current to a possible bad or shorted battery to prevent a possible fire?

[@sdf_mx99]

happy mothers day good day evryone from mexico

[@Arvidje]

This maybe sounds strange, but i have had a laptop with the same probs, no display, fan spinning full, but it was the charger! So always try an another charger first.

[@biomedicalelectronicsengin7192]

Nice

[@labibleatarilesitedesatari6724]

You are "ma petite madelaine de Proust" As usual it's a pleasure to see you Sorin. See you soon! ;)

[@laptopDoctorKZN]

Hi Please can you do a video about how to check if bios corrupt or when to reflash bios or ec

[@chocopiekid7642]

Any way, U are my idol 😍

[@sandy1234853]

Hi Sorin im currently having turn on but no picture issues also iv had it turn on and run before but it seems random but now it wont boot up at all just lights on fan will spin for a few seconds then they will stop and the lights stay on also the gpu gets warm unsure why the cpu power mosfets dont allow any power through they have 20v on one side and 0 on the other but its no short im starting to think its SIO or athe bios because everything els is ok and as i said it has booted up before

[@jeffjunior996]

Hi Siron, thanks for your good work of showing problem solving of our machines. I have been folowing almost all of your videos. My problem is i try to update bios on USB pendrive but i get 2 messages: 1: IHISI: get support mode fail in smi 2: Bios can not update inysde. what can i do, please help

[@StAlKeRsification]

The same for hp pavilion dv5 but mine only on hp logo no picture but when on win 7 logon there is

[@Electronics_Repair_NZ]

NICE

[@elyasgarcia2509]

sir how do you remove the customized splash screen and restore the default HP Logo during POST much appreciated for the help

[@Bill-lt5qf]

Woah, i had no idea HP had this feature. Good to know.

[@direx1257]

I want to thank you a lot! I was just on repair of gaming Laptop Lenovo y700 and i changed first mosfet and he start working but no battery charging. After u sayd that second mosfet Can be a reson... I changed it and its work fine! Thank you a lot! 90% of what i Can i've learned frome you.

[@steveb1706]

Hi Sorin, good honest and informative video as always. I have a question regarding customers refusing to give device passcode, do you repair or not? For me this comes down to two issues. 1. Trust, can I be trusted to fix device if not trusted with passcode. 2. Would you want to undertake repairs if you are not able to test the device functions that you repaired. I would be interested in yours and other techs thoughts on this if you get chance to reply.

[@SinsBird]

No need for password to test the computer. Password is to protect customer's user.

[@steveb1706]

@@SinsBird Hi, not really talking about computers more about phones, also certain jobs, especially software related problems would require access to the operating system. Sorin enters passcodes and checks battery charging ETC. Also would you repair an iPhone 8+ back housing and screen where every component of the phone needs to be transferred to the new housing and not want test everything before you returned the device?

[@SinsBird]

@@steveb1706 If you're doing mail-in repairs, then client can decide if they want to take a risk.

[@AsanteNgwira-sv5mv]

Was your laptop also powering down and on before u rewrote the bios

[@josiahcosmos4574]

Does this works with all laptop product or just for Hp laptops

[@johnrodgers1735]

hi is it the same for lenovo laptops with same issue? many thanks

[@christopherj3367]

I've had laptops in the past with the same issue, I usually find the owner had pressed a combination (Control button + Function button) which turns off or swaps the monitor so it can be used in multi monitor setup's. in which case you press the same Ctrl + Function (F5) buttons for it to swop back to normal mode.

[@ghostbiker7391]

dell computers dont have this option instead if there is a Bios failure u can go to the previous version that still stored in the MB but I prefer the HP one

[@md.arifuzzaman648]

my laptop's fan does not move whenever i plugged in the charger. but indication light of the power button turned on along with charger indication. will this work on my laptop?

[@santoshmundepi2977]

Is it possible in hp any generation laptop.which required reflash the bios .

[@bisdakmlgamer8224]

Hi Sir. I have HP 250 G6, capslock key blinking 5 long and 3 shorts , have power but no display. I tried resetting, recover bios but no luck.

[@BiwisMAKOU]

does it work on HP 15-bs015nia? I tried but nothing appears on the screen. Yet technicians said it's a BIOS reprogramming problem

[@betohfinger879]

how u do that in a lenovo laptop...for there is no lenovo system bios update utility

[@j0eb0t0]

HP 348 g3, turns on, but no display. caps lock no light + not blinking. happened after automatic HP bios update. suspect bios corrupted. tried using usb recovery as video, with win+b, win+v, v, b, but it does not kick into bios recovery at all. any idea? feels like board problem, but it happens right after HP bios update.

[@anthonychola4035]

i tried that on the hp 17-y002na, but it didn't work. Maybe i missed something please advise?