This app has helped me find those pesky files in Windows that go hiding

Fluent Search is free to download in the Windows Store.

You Need to Do More Than Delete Files on an External Drive to Make Them Permanently Disappear

There’s a trick to thoroughly wiping all your data before you junk your old external solid state drive—or even computer.
PC World

Transfer files from PC to PC: 5 professional ways

When you buy a new computer, you need to transfer important existing files from your old computer to the new device. At this point, you probably Googled something along the lines of, “How do I ...

The Ghosts of Your Files Haunt Old, Erased Hard Drives. Here’s How to Exorcise Them.

Before you junk your old computer or external solid state drive, here’s how to thoroughly wipe all your data, because it’s ...