Having problems with computer I built

[runemaster]

Well, this was the second time I built a computer, and when I play games, it crashes at random times, the specs are:

Intel Core 2 Duo e6600
Nvidia Geforce 7950 GT
Intel D975X BX2 Motherboard
2 GB Ram pc6400 800
Raidmax 630 Watt PSU
Seagate 500 GB 7200 rpm HDD
Windows XP MCE

When it crashes it makes this repeating sound from the speakers, the games I am playing right now are Vanguard: Saga of Heroes, and Planetside, it crashes equally as much in both of them. I tried re placing the ram but it did not help.

 

[haywood]

So-so power supply but should power that system.

Sounds more like a RAM issue, run memtest86.