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02-01-2023 11:31 AM - edited 02-01-2023 11:34 AM
After updating my bios to the latest version, i lost my touchscreen and two usb 2.0 ports, the other two usb 3.0 ports are working.
I tried to downgrade, unfortunately I can't
the message displays "The system BIOS rollback failed. Unable to open BIOS Signature file"
Thanks for your help.
02-02-2023 10:54 AM
Have you tried downloading the BIOS file from the support portal, extracting it and then putting the BIOS ROM file and the SIG (signature) file on a USB flash drive?
Here is the HP driver portal for your PC
Check all four BIOS versions to find one that has a SIG file and use that one.
Once you do that, try rolling back the BIOS.
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