Think I did something wrong

[shAn88]

OK I recently purchased and built my first system with some help from a friend. I got 4GB of memory but computer will crash after around 30mins.

If I only install 2GB the computer will run fine. Any ideas what I'm doing wrong? Below is a list of everything I got:

Your basketProduct Name Qty Price Line Total
Gigabyte GeForce GTX 460 OC 768MB GDDR5 PCI-Express Graphics Card £119.99
(£99.99) £119.99
(£99.99)
AMD Athlon II X4 Quad Core 640 3.00GHz (Socket AM3) - Retail £83.99
(£69.99) £83.99
(£69.99)
Samsung SpinPoint F4 EcoGreen 2TB SATA-II 32MB Cache - OEM (HD204UI) £63.98
(£53.32) £63.98
(£53.32)
Asus M4A78LT-M 760G (Socket AM3) DDR3 Motherboard £49.99
(£41.66) £49.99
(£41.66)
BeQuiet Pure Power L7 530W Power Supply £46.99
(£39.16) £46.99
(£39.16)
Antec 100 One Hundred Ultimate Gaming Case - Black £44.99
(£37.49) £44.99
(£37.49)
Corsair XMS3 4GB (2x2GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit (CMX4GX3M2A1600C9) £41.99
(£34.99) £41.99
(£34.99)
Seagate Barracuda 7200.12 500GB SATA-II 16MB Cache - OEM (ST3500418AS) £27.98
(£23.32) £27.98
(£23.32)
Samsung SH-S223C/BEBE 22x DVD±RW SATA ReWriter (Black) - OEM £13.98
(£11.65) £13.98
(£11.65)

 

[shAn88]

ok thx guys will do this tomorrow and let ya know.

thx again