I have an AMD system with an ATX powersupply. It has a athlon 1200, 2 hardrives, geforce4, 2 CDroms, and a 250 watt powersupply. Ok here is what happended. For a while I have had a Geforce2 installed. Everything has been going great. Today I buy a Geforce4, I plop it in, overclock it, and...