Hi All. Recently my PSU decided to pass out so I bought a newer, slightly more powerful (old one 350W, new one 450W) PSU for the machine. Now, when left on say overnight, or even for a few hours I come to the computer to find that the screen has frozen and I have to restart using the power button on the tower. When I log back into XP Pro I am told that windows recovered from a serious error and I am given various codes along with a sysdata.xml and a .dmp file. Does anyone have an idea what I should do and whether I could use the files that were created to diagnose the problem? Thanks in advance.