Hi All - I have an HP Elitebook 8460p which failed during a bios update.
The Motherboard No. is 6050A2398701-MB-A02 HSTNN-190C (UMA variant)
The bios chip is a Winbond W25Q64FVSIG
All I get at power on is a black screen and the corrupted bios signal (2 flashes of the Caps & Num lock LEDs). I've tried flashing the various bios dumps (from this website) to the Bios IC both in circuit and out but the problem stays the same as described.
Can anyone give any pointers for next steps - am I fighting encryption keys stored on board the mobo, TPM etc?
I noticed that the checksum changes for the on chip bios file after a failed boot - is it being written to by the mobo and invalidated or is it a sign of a failing bios ic?
Really appreciate any help
The Motherboard No. is 6050A2398701-MB-A02 HSTNN-190C (UMA variant)
The bios chip is a Winbond W25Q64FVSIG
All I get at power on is a black screen and the corrupted bios signal (2 flashes of the Caps & Num lock LEDs). I've tried flashing the various bios dumps (from this website) to the Bios IC both in circuit and out but the problem stays the same as described.
Can anyone give any pointers for next steps - am I fighting encryption keys stored on board the mobo, TPM etc?
I noticed that the checksum changes for the on chip bios file after a failed boot - is it being written to by the mobo and invalidated or is it a sign of a failing bios ic?
Really appreciate any help
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