Your running 4x1Gb sticks of RAM-
Your system sounds flaky-
Your PSU is very suspect-
Stress test your rig for errors.
MemTest, Prime95.
Try a clean install.
I stress tested it after installing the mobo
also stress tested the gpu with the fur thing
all checks out fine
The only issues are related to GPU drivers
before this mobo I had to switch from 3870 to GTS250
due to endless VPU recovers and problems with radeon drivers
Once I had a NV GPU everything worked fine - all drivers updates just went perfect
That mobo starts to die (storage controller bsods) so I put in new mobo
Now NV GPU will never run, so back to 3870
3870 works - but each driver I have tried has different issues - some catastrophic, others just annoying
For instance in PIX I get VPU recover whenever I activate the mesh tab
Or vsync settings are ignored
Or CCC doesn't start
Or Windows freezes ...
After trying many versions I pick 10.9 as most workable
And now I think about it - everything I have bought from OC over last 3 years
has had problems .... hard disks fail too early, monitors fail too early, mobos with problems
So either the PSU is putting out dirty power or overclockers are selling dodgy components, either way it wouldn't make sense to buy anything else from here as they sold me the PSU in the first place - and if it isn't good they shouldn't sell it