How to password protect a folder on a Windows PC and safeguard your files

To password protect a folder in Windows 10, you'll need to open the folder's "Properties" menu.

5 ways to lock a Mac computer to keep your files secure

If you're new to Mac computers, a good first step is figuring out how to lock your Mac to keep it secure from intruders.
PC World

Forgot your Windows password? Here’s how to get back into your PC

On the first day after your vacation, you sit down at your PC, type in the password — and fail. Windows says: “The password is incorrect. Please repeat the process” and expects you to click “OK.” ...