Make sure you are logged in with administrator rights on the PC. Click the Windows Start button -> Programs -> TVH Quick Source -> Uninstall TVH Quick Source Tick "Remove": And click "Next" Confirm with OK These screens come up: and Click "Finish" Now, TVH Quick Source has been uninstalled. If you need to uninstall PSC Webclient also, click "Yes" here: My Computer -> C (drive where Quick Source has been installed) -> Program Files -> TVH Forklift Parts)