Can someone please give me some advice. I got this HP computer last year when my father passed away it was only a year old. I had subscribed to Norton online and computer was working fine. Then one day when I ran Nortons scan the computer froze and monitor became white with vertical lines. Been doing it ever since. I took it to a computer shop and they said there were too many trial subscriptions left for my dad and wiped out almost everything including my documents that I had wanted to save. I purchased Norton and Spy Sweeper and again paid for another subscription but still having the freeze when I try to run Norton or spysweeper monitor goes white and have to reboot. Everytime I try to scan same problem. Please advise. Thank you.