Good Evening Ive searched and searched and can't find an easy fix for this error that i keep getting. I performed a defrag of my c:\ drive and installed some new ram and now keep getting the error: STOP: 0x00000050 PAGE_FAULT_IN_NON-PAGED_AREA Ive already run mencheck and left it running for 14 hours and 8 passes with no errors showing do i don't believe it to be an issue with the RAM Im really stuck for what to do now, if you guys have any ideas would be great, ive attahced a dump file from the last crash, this is the only one i have at the moment sorry. Many many thanks in advance. Event viewer shows the following: The computer has rebooted from a bugcheck. The bugcheck was: 0x10000050 (0xdc980000, 0x00000000, 0x8063ffbe, 0x00000000). A dump was saved in: C:\WINDOWS\Minidump\Mini100509-01.dmp.