Re: Dead no response. No lights at all. Got 3v at pwr button, But 0v at bios pin 1,8
sorry to butt in have you checked the usb's for damage
sorry to butt in have you checked the usb's for damage
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Re: Dead no response. No lights at all. Got 3v at pwr button, But 0v at bios pin 1,8
BIOS data must have been correcpted that's why no RSMRST# 3.3V back up OLD BUMP and flash Bios , test pin 100 of U11 ohmsComment
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Re: Dead no response. No lights at all. Got 3v at pwr button, But 0v at bios pin 1,8
On this board EC firmware is embedded inside EC. If the EC is blank it'll get flashed automatically from BIOS when power is first applied. If it's not blank but corrupt, that may not happen, so the EC will need to be reprogrammed manually or replaced.
Also on those HP you have to make sure the AC adapter is recognized properly.OpenBoardView — https://github.com/OpenBoardView/OpenBoardViewComment
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Re: Dead no response. No lights at all. Got 3v at pwr button, But 0v at bios pin 1,8
O.K. Folks,
piernov nailed it with the ac adapter. I had ordered some universal charger tips and they hadn't arrived till yesterday. Laptop started up with ac adapter tip. Did not know this could be a factor.
I want to thank techtiger for the input given. I was forced to read schematic that I dread because I don't know what all the engineering terminology means or points to.
Again, thanks for all the help, and I need to study up on schematics and terminology for sure!
One last question. Where on the schematic do I look to find out why there was no 3v at bios when using bench power supply?Comment
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Hello everyone,
I’m currently working on a dead MSI GP75 Leopard (MS-17E71) motherboard (i7 CPU, NVIDIA GPU) with a no display/no backlight issue initially. After extensive investigation, I’m at a critical stage involving EC firmware, BIOS/ME region interaction, and possible deep corruption. I'm seeking advanced insight from anyone with experience in EC/BIOS sync issues or PCH-level behavior. Here’s a full breakdown:
🧩 Initial Issue- Board powers on (fans spin, keyboard lights up and can be adjusted, caps lock led lights), but no display or backlight
- External display (HDMI) shows
07-24-2025, 02:17 PM -
Hello guys ,i have a dell latitude 5590 with f411p bios,this laptop has bios password ,i tried to read the bios(winbond 25q128jv) with ch341 but when goes to verify give error ,it said doesnt match .After this i flashed another bios which is cleaned and then the laptop was dead ,i tried to turn on but only white light in the buton power turned on several times and then no display at all .I had a backup and flashed again the original bios ,but this time the laptop will not turn on at all ,no light nothing,the bios original bios that i flashed was having verify error when i verified with ch341 ,i... -
First 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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Hello, I have an old Dell G3 3579 (ST: 2WQ7LP2-8FC8) with a newer 8FC8 BIOS password. I have successfully attached to the flash chip (W25Q128JVSQ) on the motherboard with a CH341A programmer and made several modifications using Intel FIT (e.g., allow software SPI write) without bricking. I was also able to boot to a modified GRUB shell where I attempted to edit many BIOS security related options like BIOS Guard/Lock, Flash Signature Override, ME FW Image Re-Flash, etc.
Unfortunately, some of these modifications like to Intel BIOS Guard failed because it is fused into the PCH. Also,... -
Summary of BIOS Whitelist Removal Problem
Problem:
I am attempting to remove the WWAN card whitelist from my Lenovo ThinkPad T560.
Initial Findings:- My current BIOS version is N1KET58W (1.45).
- I have a CH341A programmer and have successfully created two full backups of my BIOS.
- I have the ability to use command-line tools on a Linux machine.
- I attempted to use several automated and manual patching methods on my N1KET58W (1.45) BIOS, including using hex strings. These attempts all failed.
- I concluded that the
08-12-2025, 03:01 PM
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