I have an acer aspire i was on it one day and it said i needed to update my adobe reader. so i did and then my computer just shut off. So I restarted it and when I logged in it just had a black screen and my cursor. I shut it off and restarted and same thing. I put it in safe mode and set it back to factory setting got the bootmgr press ctrl+alt+del I do that and nothing ever happens. Is my computer shot???? Please help me