So last week I replaced my case Motherboard CPU Graphic card and Dvd Burner. The problem is that it randomly locks up where i cant do anything besides power down by the case button. This problem has only come up in Battlefield bad company 2. I have played GTA IV, just cause 2 and tf2 for hours with out problems. was wondering what could be the problem. Edit: system temps at time of lock up. CPU: 54c GPU: 69c MB: 40c Setup: CPU: AMD Phenom II 1055T MotherBoard: M4N98TD EVO Ram: Kingston Hyper Blu 4gb Graphic Card: EVGA GTX 460 SE 1GB Power Supply: Rosewell 530w Dvd burner: LG Dvd Burner Case: Apevia 3 case fans + fan controller and Temp Monitor HDD: 3x 320gb SATA II, 1x 500gb SATA II Any Idea's would be really help full.