I have an Athlon 3000+ 64 bit, 1056 Mb RAM, ASUS K8VSE Deluxe M/B, 160 Gb H/D, Radeon 9200 128Mb graphics, 15" TFT monitor. The power supply is 6A, 350 watt.The whole system is about 12 months old.
Only very recently on playing DVDs or 'newer' games that push the graphics card, (eg Half Life, Quake Arena), the monitor display goes totally white, goes into standby, then comes back on, and everything is ok for another 10 minutes or so, when this is repeated. I have removed the card, cleaned the connections, air blasted any dust from the fans and ventilation holes on the case and replaced the card. Still the problem persists.
On less demanding games, MS Office, and photo manipulation, there is no problem, even after hours of use.
I have now installed a brand new card, an Nvidia Geforce FX 5500 256 Mb. I have even removed the modem card directly below to ensure good ventilation. If anything, the problem has got worse, happening more often.
Do you have any suggestions as to the problem, or how to correct it?