BSOD Question

IRQL_NOT_LESS_OR_EQUAL error message in BSOD.

Is this a RAM error? Both my RAM modules are 512mb same brand DDR400.

EDIT It appears to be a memory problem, here’s a link.
http://www.microsoft.com/resources/documentation/Windows/XP/all/reskit/en-us/Default.asp?url=/resources/documentation/Windows/XP/all/reskit/en-us/prmd_stp_hwpg.asp

Why not run memtest for several hours and see?
If you have RAM prolem it should be found…

I was in a hurry, but it was a faulty RAM module.