Hello Sorin. Today my vacuum cleaner was not starting. It surely is a BIOS issue!

I love the way you identify problem on the board . Thanks for your help.

I would remove the coil on that powerrail, just to confirm the short is in the chipset and not in the regulator.

Hello Sorin, We don't know the full history of this laptop, but my guess is this laptop had overheating issues already, perhaps because of a faulty fan or heatsink. Windows update was just a trigger, as during an update CPU is always utilizes more power and resources. Overheating and dead CPU as a result.

CPU replacement on these Lenovos is tricky, the CPU is underfilled with some epoxy at the corners.

Good morning Mr. Sorin🤝 these are the charms of hybrids they are falling like flies have a nice day.👋👋👋👋

Hello Sorin, as always your videos are great. One question, what clamp do you use for the bios programmer, I have at least 2 and it is difficult for them to read correctly and hold the chip well. Greetings from Spain - Granada

The USB-C charger ports are the biggest mistake ever done in the history of Computers. Especially on Lenovos, I've had three of them, the one with the barrel connector lasted the whole time I had it. The two others with the USB-C charging ports broke down in the first month of use. Of those two one was brand-new.

You are a good detective!

I had a simmilar issue with surface pro 3 or 4. After it not being used for a long time, when started a lot of updates was going on one after another ( but No bios update). At some point the device wanted a restart (normal update procedure) and never actually restarted but got stuck with a black screen. Screen backlight was on and so the keybord backlight. Pressing the power button would switch it off, pressing again would switch it on with the same result (black screen and nothing you can do). Unfortunately, I didn't know Sorin at the time and I throw the device to the bin.

When you used the thermal camera on the back side of the board, PJs are polygon solder jumpers, and PJ14 was hot, so if a component was shorted to ground, that joint would get hot too. Re-examine the chips that get hot as it could be a faulty regulator.

when i see shortage on cpu/gpu/ram power rail, there's a good habit to take out/ disconnect one of the leg of the coil. Maybe, just maybe, the faulty is mosfet or some regulators, not the main chip. Or very unlikely the rail shorted by pcb.

its a risky job Sorin at least you diagnose the fault which is great success

At this point it might also be worth considering buying a used laptop (maybe with a broken case or broken LCD) and using the motherboard.

I have used revelprog mainly to reprogramme bios , but I have seen board with dead chipset and other components just because of the bios updates ( wrong bios updates )

I wonder how sorin with 19v prob touches exactly the thingy with hand without touching wrong one creating short. I burnt pch and io accidently sliping prob from hand.

Just an odd thought. If a failed bios update occurred could the effect be an incorrect setting in the bios that changed the voltage selection on the cpu etc. Causing the chips demise.

Sorin, What temperature do you use on your hot air station? Like to replace micro USB charging port? And is air speed on 2? I messed up removing a charging port last night. It has me wondering if it wasn't enough heat. Or I didn't wait long enough before trying to remove it. However, I ruined the board by lifting the pads. It was my own device so worst case I buy a new one. However I do want to know what you think is the problem? Thank you. I love your videos.

it happened to me on a MSI gaming laptop. After installing some drivers/windows updates my chipset was burned

Hi Sorin i wouldn't risk buying the CPU if anything i prefer to buy a board if possible.

Bună Sir Sorin, aveți idee daca cipurile ENE KB9012qf A4 (io) trebuiesc flashuite? Sau se programează singure din BIOS la pornirea laptop chiar dacă cipul este gol. Mulțumesc anticipat!

It is very bad that Windows Update applies BIOS updates on some laptops.

Salut Sorin! Am pățit exact același lucru la un Lenovo yoga 2 13 cipset în scurt și cpu ok... Am muncit la măsurători câteva ore fiindcă nu-mi venea să cred de defect... 😂 Același defect cu încălzirea cipset la 09volti și 4 amperi. Când am conectat sursa de alimentare laptop a pocnit și controlerul io ENE... Așa că nu mai am ce face chiar dacă schimb ENE io trebuie reprogramat. Mai bine altă placă de bază. Astea full bga sunt păcătoase.

I have dell 910 .. it's mini laptop I fixed the 19 volt by replace the first mosfet .. and the laptop is working.. but no any heat on cpu .. I checked all voltages like : vtt .. vid .. vccgmch .. all is good .. all mosfets around cpu is ok .. But the surse is 0.89 I think it must be 1.2 So what is the problem? Thank you

Pogopin adapter for the eeprom... I want also to buy one :)

remove coil or clear jumper and see if regulator functions normal and get 3.3v supply coming or not

Good morning. A few days ago i did replace my laptop yoga 920 13ikb battery for a new one,since that the power botton is not working,but when i plug in the charger the laptop runs automatically,and the battery is fine,when i unplug the charging cable the laptop runs just fine,when i turned off the laptop and immediately push the power botton it works,but if i turned it off for more than 10 minuts the power botton dont work... I tried updating the bios,but still have the issues Please can u help me ?

I had an old laptop. I wanted to install Linux, but I plugged the wrong USB stick (with windows 11), that somehow corrupted the bios. Well, that laptop never worked again, because I couldn't access the Bios menu anymore. :/

i think that sometime you must admit yoo can't fix all :( simply a no fix this was an unlucky customer :(, nice video has always

"Im a bios, im corrupted" 😄🥰 that was so ralph wigham 😄

Can you try to reflow pitle chipset ?

hi sorin i'm waiting for cpu soldering but in this case the best choice for me to give back the job to customer without fixing

Is there any way to prevent windows updates or at least limit only on security updates that has nothing to do with BIOS? I cannot understand why Windows would even update BIOS software

An i5 8250 is not old... but its also not exactly new either. The fact the only available merchant wants that much for it is ridiculous. The cost of that replacement CPU (even if it DID work) is 75% of the replacement value of the laptop. I would wait on fixing the laptop until a new board appeared for 1/2 the price of that CPU or a new cpu appeared for 1/4th that CPU's price.

1:50 It was showing 2.8A on the meter at the start, and then we find out the battery wasn't even connected, ie, it had to be a short.

Sorin can you tell me the model of your logitech mouse? Is it the M650 ?

is 5amp not burn chipset?

I have 2 ASUS tuf gaming A15 gaming laptops Ryzen 5800H 3070rtx 95W systems and yes Asus actually auto updates Bioses. What happens actually is that Asus is making laptop GPU's slower. Lowering Vram memory speeds. Otherwise the bioses have been good, and I have fixed the bioses back with NVflash and GPU-Z. I have no clue why they cripple their own products that have been completely stable this far. These machines are very powerful for something that only consume 110-120W when gaming.

you will have video proof sorin, aliexpress should refund you, never had a problem before even without video proof

Thank you Sorin, but I didn't know you could power through the usb port! Could someone explain to me please? THANKS

wow sorin i know you feel bad about non repair lets face it .. this board has gone to computer heaven ....but maybe miracles can happen ?

Getting chips is hard, especially since intel has BootGuard in their SoCs, just like chipsets, which means used CPU is useless, unless somehow it was taken from exactly the same manufacturer computer. So you have to get a new chip.But here is a catch, according to Intel, average CPU is worth $400-600 + tax + whatever. Yet somehow some people get them for $200 or less, and I don't understand how. Factory rejects? Desoldered from boards that didn't pass some QC before BootGuard fuses are initialized. Factory workers having sticky hands?

Astept video cu schimbarea porocesorului

i do not know for sure but i always thought only one of the usb ports was for charging? Also how does updating a PC blow a cpu? Thats some scary stuff there.

yes i believe in you sorin

Underground line shorted ,smell burns heating charger

I have another question: how can I find Discord group or people who will support BIOSes?. TIA!.

У меня 910 13ikb тоже такая же проблема. Процессор с чипсетом стоят как крыло боинга

I have a C940 motherboard that has similar problems and it looks very similar. If you would like I could send it to you and you could see if you could use parts off of it. I have already bought a motherboard for $400. I can ship it right out to you. If you wanna take a look at it see if you can salvage any parts.

Stay Away - Defective Product, Defectice Service purchased Lenovo Yoga 920 earlier this year and during the past 8 months, I’ve had to send it back to the company to have the motherboard replaced on 2 occasions After receiving a new laptop replacement, I again experienced problems w it the laptop not powering up (turning on).

As for me, I will buy the motherboard. 😉🇨🇩

How is this fault related to Windows update? Maybe Lenovo has a motherboard to sell? A new one. Why not.

On screen meter not working

What would I do? RUN!!!!!! You can't win them all unfortunately, but at least you gave it your best. It's all you can do.

*Conspiracy mode on* What if they can trigger a bit that fuses pch after bios update? *Conspiracy mode off* Would be interesting to see inside the pch what component is shorted. xray machine or something...

Sorin this is a end of story. No way to repair it cheap. With no risk.

i didn't want to spend that much of money if i'm not sure that the cpu will work

Still believe in basic trouble shooting you taught me...top day

Sorin, Just trying to learn. How did you know the black chip was a filter or coil? There were a lot of smaller black chips on the board, were all of them the same or resistors or what were they? Thanks

Why you are not using a debugger card..?

Wait for a MB to show up.

Good thanks

You need to change the name of your website to Sorin's Bios Programming 🤣

Sorin, from what i have learn from my experience in used products (even new) that coming from china,is that you can't trust those guys, never.

buy another board with that cpu maybe? shouldnt they be like equal or does intel make different versions of 8250u?

😢😢😢chipset all this while???😢😢

what other cpu can be used?

"I'm a BIOS. I'm corrupted." Haha. Makes me think of: "I'm a politician. I'm corrupted."

buy and change it

1 cpu replacement on this channel ?

I would first desolder the cpu and see if the short is gone.

I think you may need to clean your microscope lens. Looks like you've spread Vaseline on it, hehe

same en laptop HP 8th

This is your job security, no matter how many times we tell people to be 100% sure the bios updates are specifically made for your chip there’s always going to be the ones who think they know it all and >click< *doom*. READ THE WHITE PAPERS PEOPLE!!! . as for all other problems just feel happy you’ll have job security for life my friend 😁

Lol it fooled me. Was sure it was the bios haha

First thank you for making the discord free. The money making is secondary to the purpose of the channel? Re: CPU. If you play with the customer's money and gamble, that is a bit unprofessional. If you feel like trying the eBay CPU for education with your own money then that is a good educational video/professional learning experience.

Sorins New Addiction..😂

"tested " means , its been Pulled Out from another Boards 😅

Because not lots options of parts, maybe not fix it.

Sorin: try to order it from Germany. In China they say "fully tested"...how?!!. BTW, I had ordered faulty boards before, and to my surprise the fault of these MBs was the CPU. So, in my humble opinion, do it as I told you.

Tested.. 99.99% will work 😂

Ship it back, accept the defeat in this one, know your limits :o

We can't see thé reading.

Am avut exact aceeași problemă, la un laptop mai vechi, nu mai rețin marca și modelul. Am făcut upgrade de la hdd la ssd, am instalat windows, am dat actualizare la windows, iar printre actualizările bifate era si biosul. Laptopul s-a blocat în timpul actualizării si nu am mai putut sa il opresc decât forțat din buton. Am încercat să îl repornesc din buton, dar nu a mai mers. Mergea însă să îl pornesc cu combinația de taste pentru update de windows din usb, dar nu afișa nimic și nici nu făcea update. Am rescris BIOS cu programatorul, fără rezultat. Se alterase conținutul din I/0. După ce am scris controlerul I/O a funcționat din nou.

Sorry brother this is not ThinkPad this is Yoga 920

Not on your nelly 🚫

22:50min hehehehehe lol :D more power...... yes heheheheh i remember that iphone when sorin used 2 PSU to get more Amp.... so he can kill the short :) i just love waching his videos... this is how you repair things... no by replacing parts

There are 2 things that you can do in your position. I really dont like to say a customer, that i can't do something,but give a customer an option that in this situation, you have to replace the whole motherboard and the cost may be too high for this service. Give your customer an alternative. Find suppliers with refurbished laptops or parts, don't look just in ebay. If you can find a working motherboard, and the "if" is a really big one, only then you can try resolder a CPU/chipset like this one and even this is not that easy, you really can't be so sure for how long this will be fine because of the temps from this X1 Carbon Lenovo Laptop. If you want also a small invest to your workshop, suggest your client to buy the laptop for spares, if he agrees. Otherwise, just return the job and dont spend more time in this job. I personally said that i really hate as you, telling the customer, something can't be repaired.

China no Sorin, not from china is sad but the customer should buy another laptop.

It's not worth to replace a motherboard to much work and 50% chance it will work. If the price is like 50 dollar with shipping hmmm but over that look for trash bin lol

Maybe this mother can be fixed by rebelling the CPU.

I would buy a motherboard (different brand or model) with a cpu from the same generation (8th) it does not have to be the exact same cpu model number, can even be an i5 instead of i7, the bios almost for sure will recognize any intel cpu from the same generation. The cpu from china is overpriced. Much better deals can be had on complete moterboards from uk and bonus, you are left with some extra spare parts.

Maybe configuration register in BIOS CHIP is corrupted? E.g. disabled QUAD SPI bit? It's Winbond W25Q64JV, page 17/77 from datasheet Quad Enable bit in Status Register 2 - when Customer interrupted bios update then original status register may be lost. Best thing is to check what values have status registers on the same but working laptop and try to restore it. You should have function in programmer to enable/disable quad spi, but as I know this programmer also has script tool where you can change any registers using scripts. When you upload new bios and have wrong configuration in status registers effect will be the same as wrong bios.

Here is a joke. What is common between the politicians and BIOS chips? They both get corrupted.

LoL stay away from the bios programmer and do the basic diagnosis first. It looks like you did not read my comments from the last video😅. Joke aside thank you for sharing.

Try find this cpu in faulty motherboard but you need stencil and big chip with hot air it will be nice try :)

Hello sorin you never seen at the work shop again. Are you resign?

Will be great to see a cpu replace but don't buy it

Hello Sorin, change the moterboard, then less work , with little chance, no...

Unlucky Sorin you can’t win them all