Uninstalling & Reinstalling

Hi there. Various tool features in Coreldraw have stopped working (grrr) and I need to reinstall. I've tried installing the latest patches, but nothing has helped. I purchased and downloaded the Coreldraw online last year. If I uninstall using 'add/remove programmes', will the Coreldraw programme files on my hard drive remain, or will I need to download the programme again? I don't remember where to download the X7 files, so am nervous to uninstall without checking first.
Many thanks!