I installed Ubuntu 12.04 with Wubi. Then after testing it, I decided to uninstall it. I went to control panel and uninstalled Ubuntu. When I restarted my computer is still had the dual boot option to go to either Windows 7 or Ubuntu. When I selected Ubuntu, it said it couldn't run Windows and to put the repair diak. How can i completely uninstall Ubuntu form my computer?
What you are seeing is a leftover in the Windows boot loader.
Quote from https://wiki.ubuntu.com/WubiGuide/#Uninstallation on how to remove it: