To uninstall MyQ:
Run unins000.exe. You can find this file in your MyQ program folder (the default folder is: C:\Program Files\MyQ Central Server\). The MyQ Uninstall dialog box appears.
All parts of MyQ will be uninstalled except for the Data Folder. You can delete the folder manually. In case you install MyQ again, the installation program will ask if you want to use the old database files or replace them with new files.