System lock ups?

[tatts]

I've clocked my I7 to 4.2ghz (which needs 1.305V where my UD5 needed 1.28v) and despite 20 passes of linx and 7 hours of P95 im getting lock ups / freezing when gaming with abit of usb lag to boot.

This rig is really starting to annoy me now

Any suggestions please before i ditch this classified board ....

 

[tatts]

HX850 and 5770 x2

 

[tatts]

I was running it @ 4.2 with 1.28vcore & 1.3v VTT with my old UD5 for over a month with no problems. this one needed 1.305vcore & 1.35v VTT to pass P95 & linx

I'm using corsair dominator 1600 @ 8-8-8-24 (tried 1200mhz & 9-9-9-24)


All components where bought new in december and where faultless on the UD5 but i've had nothing but trouble with this classified including hard drive warnings/errors

 

[tatts]

I think i'm just going to go back to a simple board. The bios on this one is enough to give you an headache and i've lost interest lately so i can't be bothered to sit there for hours testing/tweaking.

Cheers anyway