Random BSOD at times, I've noticed when running multiple programs at once. BSOD displaying, WHEA_UNCORRECTABLE_ERROR. Ran memtest86+ on the two DRAM sticks at different times at about 5 passes. Displayed no errors. Mobo: Asus Z87-A CPU: i7-4770k GPU: GTX 750 Ti 8 Gigs of RAM BlueScreenView displays hal.dll and ntoskml.exe as possible causes.