New build keeps freezing and crashing programs! Please Help!!!

[TheSnappy]

Hey guys I just built a new computer and it keep freezing for like 10-15 seconds at a time. Also, it will crash firefox and starcraft 2 but only sometimes. Starcraft 2 will also randomly tell me that its installation is corrupted, but the I restart my computer and it boots up fine!

i have used memtest and everything checks out fine, so I can't figure out the problem. i have also re installed windows and that didn't work either. Please help!

This is my system:
windows 7 64 bit

dvd burner

CORSAIR XMS3 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMX4GX3M2A1600C9

AMD Phenom II X4 955 Black Edition Deneb 3.2GHz 4 x 512KB L2 Cache 6MB L3 Cache Socket AM3 125W Quad-Core Processor HDZ955FBGMBOX

GIGABYTE GV-N460OC-1GI GeForce GTX 460 (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

SAMSUNG Spinpoint F3 HD103SJ 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive

OCZ Fatal1ty OCZ550FTY 550W ATX12V v2.2 / EPS12V SLI Ready 80 PLUS Certified Modular Active PFC Power Supply

MSI 870A-G54 AM3 AMD 870 SATA 6Gb/s USB 3.0 ATX AMD Motherboard

Thanks in advance for any help!

 

[jasonw223]

Could be something with your drivers, have you tried nVidia's latest from their site?

 

[TheSnappy]

Yeah I tried downloading all of the newest drivers, but that didn't help. I'm really confused about this one, but its starting to seem like a hardware issue maybe. I just don't know what it would be. Thanks for the response though!

 

[jrhii]

what bios are you running?

is everything at stock?