Laptop originally worked but was bios locked. After unlocking, won't post but power rails are all present CPU gets lightly warm and fans spin normally for as long as I leave it on. Already pulled a bios from a donor board (same board model, 3662) no change it won't post. I have tried NVRAM reset, it doesn't respond. KG keyboard, SMC reset works. I checked all the SPI termination resistors, no problems, as I said laptop was working, no physical damage.
Macbook 820 3662 Bios Woes
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by YG007Hello... Where do I start. I have 2 questions/scenarios that might bring this laptop back to life, so here it goes!
I have this laptop (Asus UX52VS) where I was flashing the BIOS to it and it froze during the process. I didn't have a reliable BIOS chip programmer at the time (It was a CH341A USB Programmer from Amazon where it took hours just to get the clamp on the chip and then every time I read, it gave me different results/corruption, and never would pass the verify test as no 2 reads were the same data), so I brought it to a shop. They had it for almost 2 months, but during... -
by Vesko356First of all thanks to all of our members who have posted previously all methods posted here.
Please leave a comment if you find something new,or have anything else to add.
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If you know the laptop serial or model number go to HP support https://support.hp.com/us-en/drivers/laptops .
Enter the serial number or model number and click submit.On the next screen you will have to enter the OS
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Channel: BIOS Requests ONLY!
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by llek100Hello, sorry for the long post, I just wanted to include any details that might help.
A bit of backstory - I currently have 5 of these MiniPCs - I got them for very cheap from Ebay. All of these PCs are BIOS administrator password locked without their drives.
I also got a G3 large tower, that I could reset the password of fine just using a header and a button on the motherboard.
So I thought that I could do the same with the G4 MiniPCs, oh how wrong I was.
First of all, I stumbled upon a tutorial, that apparently showed a BIOS password reset procedure - where I basically...-
Channel: BIOS & Schematic Requests!
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by jbonavitaHi, my laptop wont boot at all
With original bios no POST, only LED lights
With alternative BIOS from model TP500LN (flashed via programmer) the notebook works again
Some issues
A- with bios from 500LN, it won't update from bios of model 500LA (from 500LN v203 to 500LA v300)
B- If updated from 500LN version 203 to 300, the battery stops being recognized
Things I tried
1- Update / clear ME: Took the non working bios, made a backup, and did this: https://www.badcaps.net/forum/troubl...theory/trouble...-
Channel: BIOS Requests ONLY!
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by WahazHello,
I have a Lenovo Thinkbook 15 G2 ITL i5 Laptop (serial number: MP2BFZEF) that when I turn it on, the led on the power button lights up for 5 seconds, then goes out. There's no display and nothing happens.
So I thought it was a Bios problem.
I found 3 bios chips on the board, which I read with a bios programmer: two XMC model bios chips and a Winbond model bios chip. Each XMC model bios chip has two partitions named XM25QH128A [3.3V] and XT25F128A [3.3V]. And the Winbond model bios chip has three partitions named W25Q80BL 3.3V, W25Q80xV 3.3V and W25Q80DV 3.3V....-
Channel: BIOS Requests ONLY!
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