Hi
This is a little simplistic but why don't you turn off the screen saver?
You don't really need them any more, I haven't used one for years.
And if you don't have the problem with it off you are good to go.
The problem is probably caused by Explorer.exe not restarting when it comes out of screen saver mode.
You might (not a sure thing) be able to fix it by running sfc /scannow...
From the elevated Prompt (Right click on the Prompt Icon and select run as administrator). Then type…
SFC /scannow
Scans and restores system files.
It may return some setting to the default state, if they have been modified.
Mike