Random crashes and freezes

Just got a new PC built, and I'm getting spontaneous reboots and freezes without any warning. Originally posted in the BSOD forum (original post here: http://www.techsupportforum.com/foru...es-692358.html), but I was referred over to here, because I might need to get more voltage for my board to support the RAM. Any help would be greatly appreciated!! Thank you!!

· OS - Windows 7 Home Premium x64, SP1 (OEM version)
· Age of system: new - 1 week old
· Age of OS installation - pre-installed when received (no reinstall conducted yet)
· CPU - Intel Core i7-3820 CPU @ 3.60GHz
· Video Card - NVIDIA GeForce GTX 660 Ti 3GB (EVGA Superclocked version)
· MotherBoard - MSI X79A-GD45 Plus (MS-7760)
· Power Supply - 850 Watts - Corsair CMPSU-850TXV2 80 Plus Power Supply
· System Manufacturer - Cyberpower Black Pearl (customized)