Part 1 - Checking Safe Mode
First, let's try booting into Safe Mode.
If you have a wireless keyboard, make sure it has fresh batteries/charge, or switch to a wired keyboard if you are having issues.
You can get to Safe Mode by booting up the computer and hitting the F8 key on your keyboard after your computer manufacturer's logo disappears. (e.g., Dell, HP, etc.) Normally, the tip I give to most people is just to start tapping the F8 key over and over after the logo goes away until a menu pops up.
Select Safe Mode from the menu that comes up using the arrow keys, and then press Enter/Return.
A bunch of stuff will come up. Don't worry about that. It's just Windows listing files it's loading. After a bit, you should be able to get to a place where you can log in.
PLEASE NOTE: Some older systems take awhile to boot into Safe Mode, so before responding to the question below, please wait at least 15 minutes.
Yes, I was able to get to a login screen AND login!: Click here to continue
No, I am still getting logged out: Click here to continue
No, my computer rebooted after listing files: Click here to continue
No, my computer is frozen after listing files: Click here to continue
No, I got a blue screen with white letters on it: Click here to continue
No, I was brought to an odd menu: Click here to continue