Re: tower melt down
Turn off your computer ASAP, disassemble it and make sure none of the components have been damaged beyond repair (or at all). Replace the ones that broke, and replace your PSU (get a good one, too). Your PSU should have turned off by itself if it was overheating, so you may have had a really crappy PSU.
Desktop: Phenom II B50 3.1Ghz, 4GB DDR2 800, Gigabyte MA790X-UD4P, 2x 1TB RAID0, GTX 460 1GB, OCZ 600W, ABS Black Pearl
Laptop: i5 430M 2.26Ghz, 4GB DDR3 1066, 500GB WD Blue, Mobility Radeon HD 5650 1GB (discrete)