Hi guys! So my computer has started freezing when playing games and rendering videos. Basically when the graphic card is used more, my computer freezes. I'm not sure if the temp is normal but I think its too hot. I have set the GPU fan to 100% speed but not really any difference. The GPU is around 51ºC when I'm just using my browser, watching videos and stuff like that. When playing CSGO and CSS the GPU is around 73-77ºC. Also note that CSGO and CSS doesn't have nearly as good graphics as for example Battlefield, pretty simple graphics. CSGO runs pretty smooth and get a little laggy after 5-10 minutes but not alot. CSS runs smooth all the time but freezes after 15-20 minutes. GPU: Powercolor ATI Radeon HD 5850 CPU: AMD Phenom X4 965 3.41 GHz RAM: 8 GB Motherboard: Gigabyte GA-970A-DS3 OS: Windows 7 Home Premium 64 Bit I believe that the PSU has 650 watts but I'm not sure. And I reinstalled Windows just 1 or 2 months ago. Is the GPU the problem or is it something else? I'm very happy for quick answers!