My son has an HP impresario laptop which has been converted to Windows 10 Pro, and used by the kids, it has performed well, but ran out of space. It was full of trash and over 70 malware etc. It is now running well except that the keyboard, sound & network are "not installed", they are, and have drivers. I had a look at the BIOS and found all references to keyboard, networks and sound are missing. I downloaded a BIOS update and installed it "successfully". It is still the same. How can I force it to replace the BIOS rather than update it?