I didn't set up my pc for several months,  my bad. When I did it was wonderful. Worked great! Until it didn't. I  did realize that older pc are not able to run newer programs. That's probably obvious to computer people.I took it to my go to repair place and was informed that it was not fixable.Then I remembered I bought insurance.I'm trying to send it off to be serviced.Which brings me to the fact I can not find the serial number.