Windows does allow you to add a password to your account later through the User Accounts feature in the Control Panel. Once set, Windows displays a password text bar when it boots up.

How to set a password on your Mac computer and lock it, in 5 different ways How to take a screenshot on a Mac, and find that screenshot on your computer later Laura McCamy ...

A password manager can help keep your private data secure, and they're easier to use than you may think.

All someone needs is a few minutes in front of the keyboard to retrieve anything they want. A login password won’t protect you, either— breaking into a password-protected computer is insanely ...

If you need to change the password on your Mac computer, here's a guide on how to change or reset it (if you've forgotten the original password).

We show how you can recover, reset lost or forgotten BIOS or UEFI password for Windows computers. Also learn how to set a BIOS or UEFI Password.

If you want to turn off a firmware password on your Mac that you've set up, the process is basically the same as above, except at step 4 you click Turn Off Firmware Password.