Gateway GT4016 no OS will install. Installing XP Pro I get 0x0000007B Installing Ubuntu 10.10 it turns off I've tried everything. I initially thought the CPU (939 Sempron 3700+) was overheating, but the heatsink is cold and there's plenty of ventilation CPU temps hover around 60 degrees Celsius. Definitely not the RAM as I've tried with each stick of RAM individually. Two different hard drives, same thing. Two different optical drives, same thing. Any suggestions before I just toss it?