Hi,
Here is how to uninstall programs in Windows 8.1.
From your main page, press the Windows + R to open the Run windows then type Control panel and hit enter.

In the Control Panel you can quickly access the old Add or Remove Programs by clicking or tapping the "Uninstall a program" link found in the Programs section.

Another way is to open the Control Panel and go to "Programs -> Programs and Features".

Sometimes you'll see Uninstall/Change as one choice rather than two. However, when that happens, that program can only be uninstalled.

If this still doesn't work, we suggest you to contact your manufacturer for further assistance.
Regards,