Have you managed to blow up your computer through a stupid mistake? I did it just once and hopefully never again. There was this ancient Kaypro II business computer running CP/M and with a Z80 processor and a whopping 64k of ram, 2 x 5 1/4" floppies and no hard drive. It worked fine - except that sometimes the floppies would suddenly stop reading, the disks would just spin endlessly. After about 2 years of this, I decided to see if I could fix it. The cause was quite simple - the plugs where the floppy drives got their power had loose pins and sometimes the connection would be lost. Ok, so I cleaned and tightened up the pins, and did a really nice job. Put it all together, turned it on - and some smoke escaped from a couple of chips. Oh noes! One of the plugs had been plugged back in but out of position by one pin! Well, most of the chips are ordinary common ones, can't be too hard to fix. And I was right - only 2 chips were killed. Unfortunately, one of them was the Z80SIO chip which drives the keyboard. This chip was completely unavailable even back then. Oh well, scrap one Kaypro. Now tell us your embarrasing computer blunders!