Tried, but got message "volume in use by another process".Please look at this post: http://www.eightforums.com/general-...te-localappdata-google-folder.html#post222431
Your HD might be corrupted.
You need to open an elevated command prompt and type: chkdsk c: /r /f and it will prompt you if you want to run on next restart, answer Y. Reboot your PC to let it run.
I am showing a "System Image Restore Point" under "Restore"; how do I delete? Deleting restore points does not remove it.