Win 7 Freezes

My windows just completely freezes and does not even respond to the capslock button, completely nothing, while making huge noise via speakers. It sounds a bit like a wongly set chunnel on the radio when u miss the right signal and hear noise.

It happens when I play games, doesn't matter which game it would be....
Simply does it out of the blue.

I recently installed a game called 2 worlds II, and it said something about physic X, so I told it to replace mine, I suspect this to be the trigger, though it didn't start right away...anyway the game is removed by now.

I looked for driver updates but it says I have the latest version...

Any help will be greatly appreciated.

Okies I will try it out, thanks :)

After removing phyx my system crushed....

When it got up again I removed my ATI driver and reinstalled it.

Now, apparently, it's working.

Annnd it freezed again T0T

I formatted full format (not quick)
And the windows freezes randomly, not to speak it works slow.

After I installed the mobo driver it gave an error msg the program has to be closed, and the reboot ended up freezing on the mobo logo.

After this point I finished the mobo driver installation (it automatically started from the point it asked for the reboot), and the rest of the drivers.

All I installed was skype, and 2 gpotato games (online games, both are original and not hacked or on private severs, both ran on my previous comp (which was 4 years old, single cpu) completely fine)).
And ofcourse it didn;t finish the installation of either of them.

it's simply freezing I dunno what the cause may be...

Ok I checked the reliability and it finally made a dump file -.-

I dunno why but usually it doesn;t even notice something went wrong...

The error notice is as follows:

Problem: Windows stopped working

Description: The computer has rebooted from a bugcheck. The bugcheck was: 0x0000008e(0xc0000005, 0x9645e2a7, 0xa3cab794, 0x00000000). A dump was saved in: C:\Windows\MEMORY.DMP. Report Id: 121510-18298-01.