But it seems odd I cannot run memtest from the cd. The system just resets before loading memtest.
I've just pulled the second stick out and tested. Same result. So I swapped the sticks over. Same result again. So it seems each stick on their own makes no difference.
Try running the sticks at a lower frequency, e.g. 1333 mhz, if thats unstable try, 1066mhz, try one stick, if stable, try 2 together all at the lower rated speed.
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