Hello GAYLE13. I understand you've lost your ability to create new folders.
First, run the System File Checker tool. Here are the steps.
- Click Start, type "CMD," and press Enter.
- Type the command "sfc /scannow" and press Enter. Note the space between "sfc" and "/scannow."
- Post the result.
If this doesn't work you should back up your registry and then follow these steps.
Let me know the result and have a lovely day.