I'm not sure if this is posted in the correct area. Anyway, I installed a new PSU and video card on my Dell Dimension E520, with Vista Home Premium 32-bit. I finished installing at about 10 am. Around 4 pm, I was watching Family Guy on Windows Media Player when the screen turned blue, but more of a light blue, not the blue of a blue screen of death. There were no words on it but nothing would respond so I killed the PC and started it up idk, 10 minutes later and things have been fine so far. What do you think happened?