Is this whats causing my system to hang?

[lettuce]

I did try changing those setting and it didn't help my lockups, but might for you James. Was suggested to me that my CPU might have a weak imc, seeings as you have different memory to what had and had the same problems might suggest that it could well be the imc on both of our CPU's that causing the problem. But, with my corsair xms3 memory I don't get lockups when watching flashvideos at rated memory speed, but when using LinX my system always fails when I run the xms3 memory at rated speeds so maybe it's not the imc on my CPU, I'm at a loss