Noreen -

Windows, especially in Vista, may prompt you to make a "Recovery DVD" of a couple of different kinds. The most commonly recommended one is for getting back into your computer if you forget a password. It may work in some cases if a password gets "corrupted" and quits working - sometimes - maybe, but it's general use is just for when you "forgot" a password.

This particular Recovery DVD form is an wonderful thing to have if you ever need it; but it only allows you to get on the computer. It's not intended to restore the computer to an earlier setup. This may (or may not) be the form you were prompted to make.

I haven't seen many complaints about System Restore failures, and the likely causes I can guess at don't seem likely for your case.

Most "game setup" gimmicks don't do much other than set a preferred (for the game) monitor resolution, and sometimes kick up the "graphics acceleration" to inappropriate levels. You should be able to reset your screen back to what you prefer in Control Panel (Personalization). If you can't get back there, then uninstalling the added trash¹ may be the only option.

Long-term, you may want to set a new password that you don't give to the hoodlum for your User name (and set a password for "Administrator"), and give that person a separate account with no system management privileges.

¹ Note that I'm not a "gamer" so my attitude toward those who mess up perfectly good computers may be a bit harsh.

John