I used a screwdriver to get the HSF on my old Tbird and managed to slip, cutting my thumb (resulting in blood on the mobo) and also bent a few capacitors over. It still worked, though 
A common mistake I've seen other people make is plugging the modem cable into the ethernet port... cue 70-90VAC on ring destroying their etherner controller and/or mobo

A common mistake I've seen other people make is plugging the modem cable into the ethernet port... cue 70-90VAC on ring destroying their etherner controller and/or mobo





I think they all still worked though, thank god
.