Computer crashes while playing steam games. Operating system missing aswell.

Danielfhn

Reputable
May 5, 2014
1
0
4,510
Hello, lately after changing my graphics card from a gtx 570 to a gtx 780, my computer has started crashing. It only crashes while I am playing steam games for some reason, and it is pissing me off haha. I have even tried to reboot my whole computer, and now it says, Missing operating system, on boot up - and it still crashes. But when I put the Windows 7 dvd in to the computer, and try to get the boot menu up, it suddenly starts, if nothing was wrong. Trying to fix the problem with the crashing, I went ahead and bought a CPU water cooling fan, which didn't help at all. I have no idea what to do, so please help me with these problems!

Hardware:

CPU:
Intel Core i5 3570K @ 3.40GHz

Ram:
16.0GB Dual-Channel DDR3 @ 799MHz

Motherboard:
MSI Z77A-GD65 (MS-7751) (SOCKET 0)

Graphics:
3072MB NVIDIA GeForce GTX 780

Storage:
1863GB Western Digital WDC WD20EARS-00MVWB0 ATA Device
465GB Western Digital WDC WD5000AAKS-00A7B2 ATA Device