How to check if a BIOS chip is damaged

[haplox]

Hello,

I have a HP Probook 640G, which Winbond W25Q128FV BIOS I bricked trying to bypass the admin password. I have flashed it with CH134A several times, with multiple versions and different programmers (CH134A, ASProgramer, Colibri, NeoProgramer...)

All I have got is all the lights of the laptop on when booting, blank screen and the "Caps Lock" and "Block Num" keys flashing 5 times. Searching the web I have found that this flashing lights mean a mainboard failure, and the only component I susppect to be damaged is the own BIOS.

The Datasheet can be found here:

WINBOND 25Q128FV

Is there any easy way to check if it is damaged? checking voltages, resistances, etc? Must be the MOBO with the AC connected to check it?...

Thanks in advance

[DeathBringer]

Try to flash original dump of BIOS.

[haplox]

Try to flash original dump of BIOS.

I did it with the same result... . Maybe the bin is corrupted too. The bin file is 16MB, but in th HP support page you can download a BIOS update, BUT... it is only 8MB in size (????), so if I try to flash it I get the message that the file size is not the same as the chip is