Acer aspire 7535 no boot after bios flash

[ramzi2019]

Hello everyone,

motherboard:
08255-2
JM70-PU MB
48.4CE01.021


Acer aspire 7535/7535g/7235
model No: MS2262

Initially the laptop suffered from a battery charging problem.
I tried to do a reset using the button on the motherboard.
After that, I no longer have a display so I flashed the bios with a dump downloaded from the internet. (Attached to that post)
Now I no longer have a boot.
So, I recovered the bios from a backup but still no boot. (Attached to that post)

Please help me.

[SMDFlea]

Re: Acer aspire 7535 no boot after bios flash

Hello everyone,
motherboard:
08255-2
JM70-PU MB
48.4CE01.021

Post the laptop serial number ,SNID

RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
https://www.badcaps.net/forum/showthread.php?t=103570
.

[ramzi2019]

Re: Acer aspire 7535 no boot after bios flash

Post the laptop serial number ,SNID

RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
https://www.badcaps.net/forum/showthread.php?t=103570
.

Thanks for your help.

SNID: 02106144720

[volinakis]

Re: Acer aspire 7535 no boot after bios flash

try this one

[ramzi2019]

Re: Acer aspire 7535 no boot after bios flash

try this one

Thanks for the help.

I think something is wrong with my bios chip. When I try to erase it, I'm still getting content when reading the chip.
Also, when I use the verify button of the programmer, I'm getting an error.
A picture is attached to the post as a prove.
If the chip is corrupted what are the possible replacement ?

[SMDFlea]

Re: Acer aspire 7535 no boot after bios flash

Thanks for the help.

I think something is wrong with my bios chip. When I try to erase it, I'm still getting content when reading the chip.
Also, when I use the verify button of the programmer, I'm getting an error.
A picture is attached to the post as a prove.
If the chip is corrupted what are the possible replacement ?

Picture shows a W25P16 chip.What is the part number etched on top of the chip. You can choose it manually,auto-detect doesn`t always work

[ramzi2019]

Re: Acer aspire 7535 no boot after bios flash

Picture shows a W25P16 chip.What is the part number etched on top of the chip. You can choose it manually,auto-detect doesn`t always work

Thank you for your interest.

The bios model is: winbond 25x16avsig.

In any case, I got another bios from an old motherboard with 2mo of size that I programmed using the dump provided by volinakis and the laptop started up again.
It's not my laptop so I would return it to its owner in the same initial conditions to avoid problems.

Thank you everyone for your valuable instructions and help.