How to Turn the Guest Account On or Off in Windows 7
Information
If you want someone to have temporary access to your computer, you can turn on the guest account. People using the guest account can't install software or hardware, change settings, or create a password. This will show you how to turn the guest account on or off in Windows 7. By default the guest account is turned off in Windows 7.
Warning
Since the guest account allows a user to log on to a network, browse the Internet, and shut down the computer, you should turn off the guest account when it isn't being used.
EXAMPLE: Log On Screen with Guest Account Turned On
OPTION ONE
Turn On Guest Account 1. Open the Control Panel (All Items View).
2. Click on the User Accounts icon.
3. Click on the Manage another account link. (See screenshot below)
4. If prompted by UAC, then click on Yes.
5. Click on the listed Guest account. (See screenshot below)
6. Click on the Turn On button. (See screenshot below)
7. The guest account is now turned on. Close the User Accounts window. (See screenshot below)
OPTION TWO
Turn Off Guest Account 1. Open the Control Panel (All Items View).
2. Click on the User Accounts icon.
3. Click on the Manage another account link. (See screenshot below)
4. If prompted by UAC, then click on Yes.
5. Click on the listed Guest account. (See screenshot below)
6. Click on the Turn off the guest account link. (See screenshot below)
7. The guest account is now turned off. Close the User Accounts window. (See screenshot below)
That's it,
Shawn
Guest Account - Turn On or Off 
