Re: HP Elitebook 8460p wont boot into bios screen
Late (very!) update for anyone who also has this problem with 8460p. For me (as advised by techtiger) I got it resolved by using a proper programmer (Ch341a - which I modded for compatibility with the 8460p bios IC which uses 3V i/o).
I removed bios chip from mobo (dont know if its just me but in circuit programming was unreliable).
Next I programmed a full bios image to the bios IC with CH341a.
Refitted bios chip to mobo and it booted!
Many thanks for advice and good luck if anyone needs to do the same...
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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Re: HP BIOS unlock tool
Many thanks for this amazing tool. Worked great on my admin PW locked HP Probook 6470b. Can also confirm this tool only removes PW - all other data is retained (DMI etc).
Great stuff!
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Re: HP probook 6470b 6050A2466401-mb-a03 schematic
Csmvon - If its still of interest the chip Q2970 is a TOSHIBA Field Effect Transistor - Silicon N Channel MOS Type Part No. SSM3K7002FU. Check out page 19 of the schematic in the 4th post in this topic (HP ProBook 6470b 6050A2466401-MB-A01 [BC](PANTHER).pdf) to see what its connected to.Last edited by ReeferMadness; 03-25-2021, 11:30 AM.
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HP Elitebook 8460p wont boot into bios screen
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...
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