I downloaded Ubuntu with wubi-installer on my Windows 7 machine but after restarting PC and booting in Ubuntu installer my PC shuts down while installing because my laptops battery was gone empty I forgot to plug in my adapter so Ubuntu fails to install, then I booted in Windows 7 to uninstall Ubuntu from add/remove programs en reinstall but the uninstaller did not fully remove the files I still have I folder in my c:/Ubuntu when I double click on that folder my explorer.exe stops responding and than I need to open the task manager to kill the explorer.exe process and restart it and right clicking does the same thing I can't do anything with c:/Ubuntu folder to reinstall Ubuntu with wubi.
I have used unlocker1. 9 to remove the folder but I get an error saying Error 0x8007045D: The request could not be performed because of an I/O device error HUH!
EDIT: Okay I fixed my problem after following this instruction!