I had to replace my home computer (one which I built myself from parts). A fortnight ago the clamp of the CPU cooler simply broke in two pieces, probably due to material fatigue, and the huge cooler landed on top of my video card. I won't name the cooler's vendor, in order to protect the guilty; suffice it to say that it was a real brand name. I obtained a new cooler, another (physically) huge piece of hardware, because I love silence and low RPM, and tried to install it.
The problem was that I tried to execute the installation during the night, after working my ass off in $DAYJOB. To say the least, I wasn't really patient. I simply didn't want to believe that I'd have to pick the whole damn thing completely apart to get access to the clamp claws of the new cooler. So I struggled with a screwdriver until I damaged my motherboard. Yes, I know, that was patently dumb.