I bought a GeCube ATI HD 4850 Now I am having a problem. Sometimes the DMC4 crashes while playing. Sometimes it even hangs and sound goes into a loop and PC restarts. when the pc restarts due to crashing of game then there is a windows message stating that "System has recovered from a serious error." When i check the temperatures. They are normal for GPU which is at 67 degrees. The proccy is at 50. Sometimes the PC doesn't restarts but the VPU Recover resets the Graphics Processor. Why does this happen? This time i was at end of a mission and watching the cut scene and there was a sound of an error and the game crashed. When i checked the desktop there was no error message. Why does this happen so frequently? This has happened in a total of 6-7 times during the last 2 days. This also happened during playing Splinter Cell Double Agent Demo. At one area the FPS came down from 100 to 25-30 and the artifacts were showing on the screen and then the PC restarted and the same old story that i said before. The artifacts didn't show up in any other game. Both the games were at MAX SETTINGS with AA 4X and 16X AF and all the settings set to Quality in Catalyst Control Center. The driver versions are 8.6. Please help me.