A problem has been detected and windows has been shut down to prevent damage to your computer. wdf 01000.sys page_fault_in_nonpaged_area if this is the first time you've seen this stop error screen, restart your computer. If this screen appears again, follow these steps: Check to make sure any new hardware or software is property installed. If this is a new installation, ask your hardware or software manufacturer for any windows updates you might need. If problems continue, disable or remove any newly installed hardware or sofware. Disable BIOS memory options such as caching or shadowing. If yor need to use safe mode to remove or disable components, restart your computer, press F8 to select advanced Startup options, and then select save mode technical information, ...stop : 0x00000050 (0xFFFFFFFFFFFFFF89,0x0000000000000001, 0xFFFFF880010BFE41, 0x0000000000000000) Wdf01000.sys - address FFFFF880010BFE41 base at FFFFF8800107D000, datestamp 4a5bc19F