This is a dual boot system, I'm sorry I reread my post and see that I wrote that it was 2 PC's. I ram memtest for 2 hours and it showed no errors (PC 800 DDR2 6400). I've never had any problems like this before.

On PC with XP pro it works fine but on one with Vista Home Premium it loads menu but in backgeoun Box it states "out of memory" and hard freezes the PC, have to turn off power and rebboot. What does it mean out of memory as my wife has 2gig ram and 512mb on video card, 203gig free on HDD.