Sometimes when I have software running, such was the case with Grand Theft Auto 5, ctrl alt del did absolutely nothing. Alt f4 nothing. Everything I tried did NOTHING. I was stuck at the settings screen of the game. I just can't believe that in 2017 MS doesn't have a fail safe that actually works. Ctrl alt del worked better in win7 and winxp than it does in win10. Is there a secret james bond thing that takes place of ctrl alt del that I don't know about that works? If so I'll apologize for my rant here. I'm getting tired of this scenario with fully updated win10.