Hi Willie,

At first glance, if your PC is not shutting off, then either
the monitor or the video card would be responsible for the
black screen / shut down that you're experiencing.

Since you've already replaced the monitor, that leaved us
with one main suspect: Video card.

Check the fans and make sure that it's not running hot.
Update the video card drivers as well for good measure.

--
Cheers, Windows XP MVP Shell / User
Jimmy S. http://mvp.support.microsoft.com

Visit my MSN Zone.com and Gaming Help Site: http://mvps.org/nibblesnbits
MS Games Help and Support Center: http://support.microsoft.com/?pr=gms
My advice is donated "AS IS" without warranty; nor do I confer any rights.
__________________________________________________ _______

"willie" <willie@discussions.microsoft.com> wrote in message news:01C679AF-324F-4D60-AE7B-DACDAB3A46AF@microsoft.com...
| Can anyone help me, evrytime I play a game after a few minutes my monitor
| shuts off, it happens all the time even when I play in Lan mode. The grafics
| are set, shut off time, Ive changed my monitor in case it was that. Ive
| changed my power supply and it still happens. I have a P4 with 1024 ddr ram.
| A 9800 pro radion card, these have all been tested and are working. Anyone
| got any Ideas how to solve this problem before I pull out all my hair.