Recover lost files on Windows 10 - Microsoft Support
Use this app to try to recover lost files that have been deleted from your local storage device (including internal drives, external drives, and USB devices) and can’t be restored from the Recycle Bin. Recovery on cloud storage and network file shares is not supported.
Fix problems that block programs from being installed or removed
The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs. It also fixes corrupted registry keys. First, you'll need to download the troubleshooter. Download troubleshooter.
Retrieve files from the Windows.old folder - Microsoft Support
Retrieve files from the Windows.old folder. If you choose to “Keep nothing” when you upgrade to Windows 8.1, or if you reset, refresh, or reinstall Windows, your personal files are temporarily saved to the Windows.old folder for 28 days (unless you formatted your hard drive before installing).
How can I prevent users from connecting to a USB storage device?
Describes methods to prevent users from connecting to a USB storage device that is connected to a Windows XP-based, Windows Server 2003-based, or Windows 2000-based computer.