Don't ever install Webdrive client by South River Technologies. It is very difficult to uninstall, particularly if it is not in Add/Remove Programs. Trying to stop the service doesn't work, as it automatically restarts even on manual. Deleting the folder won't work as it is still in use. This is what I had to do:
1) Boot into BartPE.
2) Delete C:\Program Files\Webdrive
3) Boot into Windows, open regedit.
4) Delete the following: HKLM\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_WEBDRIVEFSD
HKLM\SOFTWARE\South River Technologies
and the most important...
6) Reboot and it should be bye-bye