Computer Locks up Randomly

[morissette23]

Intel Core i7 920
OCZ Gold 6 gig ddr3 1600
Gigabyte GA-X58A-UD3R
xfx 5870
win 7 home prem
ocz mod 800 watt ps

I recently have gone into the bios and changed the memory speed and volts to 1.6 and 8-8-8-24 the board was setting them stock to 7-7-7-12 @ 1.15 volts ( around there ) now im getting random lock ups , just browsing the net or playing video games on it, happens about 2 times a night. any ideas?

 

[discboy321]

If this is a new build did you upload all the drivers and also look at the motherboard web page for any bios update.

 

[morissette23]

its not that new of a build maybe 2 months old , i just never had time to tweak my bios settings , finally did and now im getting that i changed my tRFC to 88 and so far no problems