problem in Win CC

how i can remove Wincc from my laptop, so i can install it again
i already uninstall some component from control panel but still not every thing were removed...
thank you

What Version are you running? If you're using WinCC Flex 2004 here's a link to the Siemens website http://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=en&objid=22350636&caller=view

you should look into drive imaging software.
this allows you to save and restore image of the harddrive or partition.
you can make backup before installing something and if you don't like it, you can simply restore previous condition using backup.