I'm using Windows XP. When XP has finished loading (i.e. the loading BAR on the black background stops) or at least seems to have finished, all signal to my monitor stops; it just GOES into standby mode.

The only system change made was a driver update to my graphics card, an NVidia GeForce 5500, a few days ago, but it worked fine then. My PC is not connected to the Internet.

When it runs scandisk on its own after having been rebooted without Windows being able to shut down properly, the colours are messed up. Where the light blue should be it is a light brown, and the dark blue becomes green.

It runs through okay on safe mode, and I tried a system restore, but after restarting automatically in order to restore, it went into scandisk and REPORTED that a lot of files that seemed to pertain to system restore had been corrupted in some way.

Is this a hardware issue, or do I NEED a full XP reinstall?deadmanstanding... Well , I would be inclined to remove the vid card as a test .
and then reboot the pc with out the card ...... Does it have a onboard vid card by any chance ?

dl65  There is no onboard graphics card, however, upon examining the graphics card, I noticed that it was not fully in the motherboard; it had come loose at the end. Fixing it corrected the colours of Scandisk, but failed to fix my problem.

I tried a system restore back to 11th May, and that seems to have fixed it, so whatever the problem was, itmust have been software I put on in the last week.

Fix'd.