Page 1 of help! graphics problem

Upgraded an old pc recentley for a friend (PIII 800Mhz) with on board graphics. We installed a ATI Radeon 9250 PCI graphics card (256mb) and all appeared well on games that we tried - Enclave and Prince of Persia

After a day while playing Enclave red lines appear on the screen and sometimes crashes.

Prince of Persia again has problems with it sometimes all of a sudden flashing white on the screen for a split second.

This is bugging me, drivers are catalyst 4.9 and running windows xp and everything else seems normal on the pc. I have tried uninstall/installing again to no avail however I noticed when trying to install the control centre it stated that no ATI hardware was found????? but in display properties all the ati tabs are there.

Please help.

have you tried getting the newest drivers from the manufacturers website ?

failing that try installing older drivers (ie, from the disc that came with the card)

hope this helps

Also make sure the old graphics chip is disabled in BIOS.

Ste