Radeon HD 4870

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Heat Freezes

Ask the Doctor LogoEvery time I play a game, I get the frozen-screen treatment—sometimes right away, sometimes a few hours in. I get a weird checkerboard pattern on the screen and I can’t Alt+F4, Ctrl-Alt-Del, or anything else but a hard restart to get back to Windows. I’m running 32-bit Windows Vista, an AMD Athlon 64 6000+, a Sapphire Radeon HD 4870 Vapor-X, 4GB Kingston Hyper-X RAM, and two 1TB hard drives, all inside an Antec Nine Hundred case. I’ve tried running with the side of the case off and a fan blowing on the card, even though with the case closed I get cool air out of the back, so I doubt heat is the issue. I’ve reinstalled video drivers countless times and the forums don’t seem to be much help since I haven’t seen a thread describing the same error I get.

—Chris

Read the Doctor's advice for Chris after the jump.