Hi all, Newbie here! I've an HD7870 PCS+ Myst Ed and I'm using it for about 6 monts. I love the card. But I've a quite strange problem with it. I'm stressing the card with Gpu-Z: Load level goes up to %97 while the temperature reaches about 70 degrees celcius. No problem occurs. But when I launch a game, the system goes restart right after the loading screen/before the game menu. The reset is independent from: - Windowed/fullscreen mode. - Install location (i.e. tried with different hard drives) - The game (i.e. Grid 2, Euro Truck Simulator, Splinter Cell Conviction, MoH Warfighter, Bioshock Infinite (Benchmark mode or playing mode) etc.) System specs: CPU: Core 2 Quad Q8300 @2.5G RAM: 4GB DDRII 800MHz (Kingston 2x2G Set) PSU: High Power Direct12 750W M/B: Asus P5Q Pro Notes: - From what I've seen from logfiles, the system goes reset while the GPU freq. is about 300MHz (i.e. idle mode) - I measured the voltage across the GPU supply rail, it stays about 12.2VDC before the reset. - With prime95, CPU's temperature does not go above 60 degrees celcius. - Latest drivers. So, what could be the problem? Sorry for long post. Thanks!