rebooting the PC and then boot up in safe mode and select the system restore to the day before you made the change to see if it fixes it?
I have an HP 6120 n running Vista. I saw a 'tip' here yesterday to select the Run feature in Vista and ran msconfig. I chose the startup tab and unchecked some boxes such as aol. I figured this may be the problem, as it happened on the next bootup. I also unchecked a box called kbd, which I thought was the feature that highlighted the caps lock key, etc in the systray. It's still there, so I guess it has to do with something else.
Anyway, the computer is useless now. When I click on anything, an hourglass shows up for a few seconds, then nothing. This is a business machine and I need to get it up and running VERY quickly. Any help appreciated.