Open the Control Panel and select Uninstall a program, or type uninstall on Windows 8.
Highlight ActivDriver and click Uninstall.
Click Yes to uninstall the ActivDriver.
Mac OS X
Open Applications and locate the Promethean folder. Open the ActivDriver subfolder and double click uninstall.
A terminal will open. Enter your password. The cursor won't change or move while you type; this is normal. Hit Enter.
You will receive confirmation that the ActivDriver has been uninstalled.
Open Synaptic Package Manager.
Enter your password when prompted and click Authenticate.
Select the Promethean ActivSoftware repository. Locate the activdriver package and right click. Select Mark for Complete Removal.
The selected packages will be highlighted. Click Apply to uninstall the ActivDriver.