New build PC freeze up!

Hello all!

I got me a new PC a few weeks agoe, and its now starting to make problems for me
It just freeze up randomly, and i can not use my keyboard, mouse or any thing. and it comes a high looping static sound from my headset, and i end up in restarting my PC.
I have been luring around on other threads to see if i can find any help, but no luck
the only thing i can think on that might be the problem is a registry error of some sort, but not really sure.
Im not any good with PC at all so not sure what to do.

PC specs
mobo: Gigabyte GA-PH67-UD3, Socket-1155
RAM: Corsair XMS3 DDR3 1600MHz 8GB CL9
CPU: Intel Core? i5 Quad Processor i5-2300
PSU: Chieftec Nitro Series BPS-950C 950W PSU
Grafics: HIS radeon hd 6950 2gb gddr5 turbo review
Hard drive: Western Digital Caviar® Black 500GB

yell out if i need to post any other info!

Your problem may be caused by many things > RAM problems >graphics drivers > overclocking > heat issues > using more than one AntiVirus at the same time > etc etc.

Some steps you may wish to try -

* Make sure that you are not over heating.

* If overclocking, restore to original

* In an administrators account type cmd in search.
In cmd type sfc /scannow.
This will report and fix minor problems.
Take note of what is said at the end.
Should your computer freeze, try to do the tests in safe mode.

* Search > type eventvwr
Go to the windows log>application tab.
Look for red critical errors.
Should the be any that say app hang, app crash, or anything that relates to the problem note the event ID, and the source codes and tell us what they are.

*Clean boot. You may discover what is causing your problem.
How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7

* Go to search, type device manager and look for any yellow warning markers

* Download and run SuperAntiSpyware{free} or Malwarebytes {free} - do a full scan after you update.

* Run a full antivirus scan.

* Oh! BTW - Have you had any BSOD's?

The PC is not overclocked, and as far as i can trust easytune6 its not overheating.
And the PC dos not crash in safe mod, had it running for a few houers with out a crash. And i havent gotn any BSOD.
and ive run CCleaner and avira a few times and the PC is clean.

but il try to run those tests you wrote down!

Ok, ive just done the SFC scan, and it came back clean.
and all the drivers are up to date.
And the only red warrnings i found in eventvwr was from HL2.exe and skype.
found a few yellow warnings saying some thing about registry error of some sort. The ID is 1530, but dont know where to find the source code.

BTW, the freezeing started after i got me a new gaming keyboard, can that have any thing to do with it? cuse i just swaped back to my old one, and i havent had a freeze in 1 day so far.

Keep testing them both. See if the pattern continues.

Ok, so far the PC has been on for around 2 days now, with no lockups, so it seems that the keyboard was the problem for some strange reason.
Any one got an idea on how?
Still not gona close this thread as solved yet, gona have it open for mabye 2 more days just to be sure, so i dont have start a new one.

Well 1 min after i posted the last post i got a freeze. damn this is pissing me off..!
Any one got a idea on what the problem can be?