Alienware Aurora freezing randomly

Recently out of the box my Alienware Aurora right out of the box was freezing within the first hour I got it. I've talked to the tech support on the phone, he did some test and such on my CPU and etc. and updated my drivers, did a test that took like an hour on the PSA+ thing when I press F12 when restarting. 

System specs - 

Windows 7 Home Premium 64bit

875w PSU

i7-2600 w/ 8mb cache overclocked to 3.9ghz

8gb ddr3 at 1333mhz ram

1GB GDDr5 gtx 460

1TB hard drive