Hi all. I'm trying to fix a pc for a work colleague which boots but wont load windows. Its an emachines 570 with a celeron 2ghz, a TriGem IM845G (Imperial) mboard and 256 ddr2100. I've tried the restore disks which appear to work but as windows is about to boot, the screen just stays black. I then tried one of my own windows xp disks which took about an hour and a half to load in. Rather than smoothly copying each file in turn, it would load about 3 or 4 then pause for a few seconds before carrying on which obviously isnt normal. At the end of this I got the same result as before - boots half way then nothing. This seemed like either a hard drive or memory fault so I've replaced both of these which made no difference and the hard drive works fine in my pc. Basically the only things I havent tried are the power supply - as I cant see it causing this type of fault and the mboard/processor as I havent got spares of this kind to try. I think I've narrowed it down to the mboard but I've never come across a faulty board causing this type of problem before so I'm reluctant to tell him he needs a new pc without knowing for sure. Anyone got any ideas that I may have missed or experienced a similar fault. Thanks in advance.