Hello, I've been having this problem for approximately 6 months now; my display goes into a black screen at random intervals when I have a 3d applicant running. I've pretty much just let it pass in the past but recently I picked up a copy of Half Life 2 and its black screening 30-50 seconds into game play. When this happens, sound still plays in the background and I can send the system commands but screen remains blank. Only way for me to get out of this seems to be a forced reboot. I hope you guys can help, I'll try to be as cooperative as possible. Motherboard: http://www.xpcgear.com/msirs480m2il.html CPU: AMD Athlon 64 FX-60 Dual Core Processor Ram: Two sticks of Kingston PC3200 (DDR400) SDRAM - 1 Gig each Video Card: SAPPHIRE Radeon x1800XT 256MB Pci-E x16 PSU: Thermaltake TK2-500 +12 V1 - 14a -12 V2 - 15a -12 V - 0.3a Monitor: Not too familiar with this one. Nokia Multigraph 445Xpro is the name. Hard Drives: Not sure how to figure out what this one is Optical Drive: As the same for this one Additional PCI cards: none Number of fans present: One on the case, one on the videocard and one on the processor. Video Card Driver: Catalyst Control Center v7.9 Motherboard Driver: Not sure where to find this one but I updated it 2 weeks ago. I'm just not sure how to go about fixing this, I've actually asked for help here before but did not get any resolution, searched numerous forums for the answer but all entries seem to lead to a dead end.