Bug Check 0x50: PAGE_FAULT_IN_NONPAGED_AREAhttp://msdn.microsoft.com/en-us/library/ms793437.aspx
Bug check 0x50 usually occurs after the installation of faulty hardware or in the event of failure of installed hardware (usually related to defective RAM, be it main memory, L2 RAM cache, or video RAM).
Another common cause is the installation of a faulty system service.
Antivirus software can also trigger this error, as can a corrupted NTFS volume.
This Link have all the infomation you need about the BSOD code you posted.
Try it to resolve your problem.
Microsoft removed the content! This was a page that I really thought would answer a lot of questions. Dang!