My new PC always crashes after 10 seconds to 15 minutes of gaming. The screen goes black (No signal) and the computer remains on. Here are detailed specs: aBit IP35 Pro XE Intel C2D e8400 @ 3.6GHz (1.3v) Sunbeamtech Core Contact cooler (39c idle temps - 52c load) Asus Radeon HD 4850 OCZ 2x2GB DDR2-800 5-5-5-15 PC Power & Cooling 610w Silencer Antec 900 Running with: Vista Ultimate x64 ATI Catalyst 8.9 drivers I think this is an issue with the graphics card because the system is 8 hrs Orthos stable (that is where I got the 52c max CPU temp from). The graphics card temps are pretty high (67c idle, 92-95c load) so I think this could be a heat issue, but I think those temps are normal for these cards. Anyone have any advice?

I see you have your CPU overclocked. What settings did you use to arrive at 3.6GHz? Are you running the RAM in sync? Did you lock the PCI-e at 100MHz? "If my answers frighten you then you should cease asking scary questions" - Jules Winnfield (Samuel L. Jackson) in Pulp Fiction

The ram is running at spec (ddr2-800 5-5-5-15 @ 2.2v). The FSB is at 400Mhz (cpu multi = 9x). I have not locked the PCI-e bus at 100Mhz, but I will definitely try that when I get home and see if it helps.

"The ram is running at spec (ddr2-800 5-5-5-15 @ 2.2v)" That 2.2v tells me that your RAM is actually factory overclocked DDR2-667. True DDR2-800 runs at 1.8v. "If my answers frighten you then you should cease asking scary questions" - Jules Winnfield (Samuel L. Jackson) in Pulp Fiction

Since my last post, I have: -Put in a PC Power & Cooling 610w Silencer -Put the CPU at stock settings (3.0Ghz), memory at 1:1.2 ratio (ddr2-816) I noticed the gpu fan was spinning up to really high speeds in small bursts (like, on-off-oooonnnnn-off-onn) so I quit out to CCC and saw the temp was at 98c. I put the fan at a manual setting of 60%, but I still got crashes afterwards. I did not get any crashes in HL2 Ep 2 (max settings) and Call of Duty 4 (max settings), but Halo: CE and Lego Batman both crashed after less than a minute.