You can manually change the background or timeout via Windows Settings under Personalization > Lock screen . If you'd like, I can: Write a custom .reg script for you to copy and paste.

: Use a file extraction tool like File Explorer or 7-Zip to extract the contents of the .zip file to a folder on your computer.

When Leo returned, he was horrified. "How did you do this?!" he gasped.

The ZIP package typically includes the undo script; do not delete it.