OK so i leave my pc on overnight as i have task set to run like virus scan defrag and various windows task. I never had this issue with win 8 but know i get this random freze issue with win 8.1. I left it on overnight like i always do i woke up moved the mouse the screen woke up but things were frozen, I tried CTRL ALT DEL and nothing. can someone help me narrow down the problem please, Only thing that i have done that is new and PNY dont think its a issue is flash the video bios to fix the secure boot issue, could a setting off in the bios be causing this should i reset to default? Thanks all and have a awesome day.