Hello again out there. Yes, my computer works again. My local repair guy (the third store I tried, but at this one I got a real live voice) showed up this morning, just 48 hours after I called. Windows flashed across the screen as his fingers danced across the screen and I had not the foggiest idea what he was doing. But after 20 minutes it was back to normal and it seems to be working fine now.
Apparently my computer thought it had two screens attached, and it was sending some programs (the ones I thought I had lost) to the second screen, which actually didn't exist. He also advised me on upgrading my security software and will order a replacement hard drive for me, this time a solid state one which should be much faster. They will take the computer away one day next week to get that set up, and at the same time set it up with a microphone and voice recognition software so I can dictate rather than type. Maybe I can get some serious writing done then!
HOWEVER, Lightroom will no longer import photos from my iphone, so I can't access any of my recent photos to post them!@#%$XX! I don't know whether this is an iphone problem or another new computer problem. Now I have to try some other tricks to see if I can overcome this problem.