HP Laptop keyboard does not work when trying to enter BIOS password or Bitlocker passcode
Product: HP Probook 640 G4
Operating System: Microsoft Windows 10 (64-bit)
I have an HP 640 G4 laptop, worked fine for a while, then for some reason, the laptop keyboard stopped working when entering the Bitlocker passcode. This is also the case when trying to enter the BIOS passcode too. But it is perfectly fine in Windows. The user has to put a USB keyboard in just to get past the Bitlocker code when undocked or at home. I have updated the BIOS as I have seen this before on an HP Probook 645 but this has not solved it on this unit.