![]() |
|
|
Thread Tools | Display Modes |
![]() |
#1 |
New Member
Join Date: Aug 2021
City & State: Massachusetts
My Country: usa
Line Voltage: 120VAC 60Hz
I'm a: Knowledge Seeker
Posts: 7
|
![]() Issues started after bios update with power button blinking with no power on.Had to unscrew battery and detach it for it to boot with bad bios checksum message.Tried several Bios recovery using USB,showed it being flashed and booted fine but it would go back to same behavior as soon as I access the bios(Wont reboot). Would work fine for several days too as long as I don't go into the bios
shut it down yesterday and now it will only show power led but no activity,doesn't boot to Bios USB recovery anymore. BIOS Chip is MX77L12850F it was on version F.14 I need a way to backup the corrupted bios and flash a working image. Already ordered a T48(TL866-3G) programmer but I am not sure if it can save it Last edited by bombob; 03-23-2023 at 12:06 PM.. Reason: typo |
![]() |
![]() |
![]() |
#2 |
Super Moderator
Join Date: Jan 2018
City & State: York
My Country: UK
I'm a: Knowledge Seeker
Posts: 12,742
|
![]() |
![]() |
![]() |
![]() |
#3 |
New Member
Join Date: Aug 2021
City & State: Massachusetts
My Country: usa
Line Voltage: 120VAC 60Hz
I'm a: Knowledge Seeker
Posts: 7
|
![]() |
![]() |
![]() |
![]() |
#4 |
New Member
Join Date: Aug 2021
City & State: Massachusetts
My Country: usa
Line Voltage: 120VAC 60Hz
I'm a: Knowledge Seeker
Posts: 7
|
![]() The programmer gets delivered later today. upon reading the support list, it looks like my bios chip is not supported but I read on a post here https://www.badcaps.net/forum/showth...1216206&nojs=1 that mx77l12850f is interchangeable with W25R128JVSIQ (same voltage,capacity and pinout). Should I dump it using this chip profile? do you think it will work?
Last edited by bombob; 03-24-2023 at 06:50 AM.. |
![]() |
![]() |
![]() |
#5 |
New Member
Join Date: Aug 2021
City & State: Massachusetts
My Country: usa
Line Voltage: 120VAC 60Hz
I'm a: Knowledge Seeker
Posts: 7
|
![]() Here is the dump for the laptop
Serial: 8CG12640QC Win11 21H2 |
![]() |
![]() |
![]() |
#6 |
Badcaps Veteran
Join Date: Sep 2021
City & State: N/A
My Country: N/A
I'm a: Knowledge Seeker
Posts: 2,379
|
![]() Here's your New BIOS, it's a Virgin BIOS from HP with your DMI and Windows Key.
|
![]() |
![]() |
![]() |
#7 |
New Member
Join Date: Aug 2021
City & State: Massachusetts
My Country: usa
Line Voltage: 120VAC 60Hz
I'm a: Knowledge Seeker
Posts: 7
|
![]() |
![]() |
![]() |
![]() |
#8 |
New Member
Join Date: Aug 2021
City & State: Massachusetts
My Country: usa
Line Voltage: 120VAC 60Hz
I'm a: Knowledge Seeker
Posts: 7
|
![]() I fear its a board issue. Flashed ,verified. Dumped, compared.Still no go. tried powering without bios chip and its the same. My guess is that the Nuvoton microcontroller is bad
|
![]() |
![]() |
![]() |
Thread Tools | |
Display Modes | |
|
|