If you tried dual booting and then changed back...

If you've tried a dual booting setup, and then decided you liked it better as it was before, and you re-partitioned your hard-drive back to one partition, but now you can't get rid of a boot screen at startup that asks you to choose between two operating systems when there's really only one, and you would like to have all that fixed, there's a solution.

Look for a freeware program called VistaBootPRO 3.3 and follow the directions. It will make a backup of your boot sector, and then it will scan it for errors, and when it finds that entry for the now-removed operating system, it will change that one's color, and let you highlight it and delete that entry from the boot record. Then you set the good entry as default, save all your changes, and close the program. The next time you start or reboot, it will be a regular one, without that boot screen asking you to choose from things that aren't there. Your system will be back as it was before you tried the dual booting stuff. And you won't have to risk trying to edit hidden system files.

This program includes elements of Microsoft's Windows code, which are used with their approval, and it works not only on Vista and XP, like it says, but it also works just as well for Windows 7. And it saves you the trouble of re-formatting the drive and starting fresh with a new install of your operating system.