RE your proposal---
Use System Restore to day when all was well.
start, ALL Programs, Accessories, System Tools, click on System Restore.
I did this, restoring to yesterday, and it DID NOT work.
The system restore apparently keeps all saved files, and these things filling my desktop, which I didn't create or want, are considered as saved.
When the system booted up again, they were and are still there.
Thanks for trying.