Hi all, need a bit of help. I just installed a new 500W PSU into a Dell Dimension 5000 (replaced the standard 305W one) - it all appears to work fine. When I restart the PC I get a windows Blue screen. If I restart again it works fine and has no issues at all - confused. Can anyone help? I can not see why XP would blue screen every 2nd reboot? Any advice - things to check? Have I missed a connection somewhere? Thanks, Kieran.