I've been getting the page fault in nonpaged area and "irq not less or equal" blue screen. I thought it may have something to do with my nvidia graphics card (geforce 4 mx440-8x 128M), but after running memtest, I think it's a RAM issue. I have 2 512 kingson DDR sticks. When I run the test with both sticks, I get an errors on the test 7 (random number sequence). So I tried testing each stick individually. Both passed all tests. When I test again with both sticks, memtest will either lock up during test 7 or report errors - no matter which combination of the 3 slots I instert the RAM sticks. But when I only have one stick in, everything seems to work smoothly. Both are kingston. one is kvr400x64c3/512. the other is kvr400/512r. Mobo is a Asus a7v8x-x. Do you think this is a problem with the mobo, some kind of conflict, bad ram?

Try manually configuring your RAM settings in the BIOS, then run memtest86 again. You may also wanna give memtest86+ a try & see if you get the same results.

I don't know what causes that, but I had the same symptoms with memtest on a prior system. I didn't have any problems with the system, so I assumed it was a false failure and ignored it.

well, I though the RAM was the problem, but I'm still getting the "Irq not less or equal" BSOD. I can't believe this is happening. I totally wiped my HD clean, tested for bad sectors and did a clean install of window. Everything worked fine for about a month, and now this BSOD is back. Arrrg!