Hi, I'm Robinson, and I’m happy to help you today.
I know how frustrating this may be for you but I'll do my very best to help you.
Did you are receiving any error messages when trying to delete the temp files?
Another option is to delete the files directly from the TEMP folder.
1-Right-Click on Start and select Run
2-Type: %temp% and click on OK
3-Then the TEMP folder will be opened
4-Press Ctrl + A to select all files and press Delete to remove all files