PC keeps freezing up, wondering if there might be a hardware problem

Hi,

I recently bought and assembled my own PC. Shortly after it was up and running, I started experiencing random freezes. The computer suddenly freezes, and I have to use hard reboot to get it working again. Windows does not register any relevant error messages regarding the incidents, which are occuring quite frequently. So no help there.

I just switched from Vista 64bit, formating all my harddrives, to Windows 7 RC 64-bit, hoping this would solve it. The problem has not gone away. I've hardly installed any programs yet, so I doubt the problem is software related, and I'm just all out of ideas.. This is my computer, and I was hoping - if there are any obvious errors or conflicts with my current hardware - that you could point it out for me..

ASUS P5Q3, P45, Socket-775
ATX, DDR3, GbLAN, Firewire, 2xPCI-Ex(2.0)16

Intel Core™ 2 Duo E8400 3.0GHz, Socket
LGA775, 6MB, 1333Mhz BOXED w/fan

Corsair XMS3 DDR3 1333MHz 4GB CL9
Kit w/2x 2GB XMS3 modules, CL9-9-9-24

Samsung SpinPoint F1 1TB SATA2
32MB 7200RPM

APLUS Case CS-188AF, ATX, Black, 250mm

Corsair Powersupply 550W Black, ATX/EPS,

GeForce GTS 250 512MB PhysX CUDA
PCI-Express 2.0, 2xDVI, Graphics Plus, 738/2200Mhz

D-Link DWL-G510 AirPlus G 54 Mbps


Any suggestions would be greatly appreciated. Thanks

Did you up the voltage to the level required for that kit? The stock voltage is 1.5volts but corsair ram will not run properly at that voltage. Find your kit on this page and then up the voltage to the level listed
http://www.newegg.com/Product/Prod [...] %20Series)