When booting my PC with Windows 8 as my main OS, my Computer shows me two Operating Systems to boot either I uninstalled Ubuntu. I also can´t uninstall Ubuntu anymore and if I install a new Ubuntu again there are two "Ubuntu" options when choosing my OS, but only one of it works. I´d really prefer to have one working Ubuntu system or no Ubuntu OS. How can i delete the not working Ubuntu?
Sorry for mistakes i´m from Austria.