Clearing the CMOS memory on your motherboard is often the quickest way to access a desktop when you don't know the BIOS password. The password, along with your other BIOS settings, goes back to the ...
I seriously doubt he damaged anything. I remember there was one mb manufacturer that shipped its boards with the clear jumper set - they wouldn't POST that way, but once the jumper was set to normal ...
A friend just asked me over to fix his comp and I needed to get into BIOS. Turns out its locked and he doesnt know anything about it - got the machine from a friend. So, clearing CMOS would sort that ...