Unable to find and download new Display driver

I am running Mac Sierra with Windows 7 Virtual machine and Parallels 12. I recently had problems with coherence mode and was recommended to delete the WDDM Display driver. Unfortunately now I am on the low resolution VGA driver on Windows VM and cannot resize my icons to before.

I cannot find the Parallels reinstallation menu on my system, all I can see see on the top menu bar is 'Parallels Desktop - File - Edit - View - Window - Help'
None of these have links to reinstallation.

I have been unable to find a website that will allow reinstallation of just this driver - can anyone help?
Matt

 

The problem is that when I click the virtual machine I enter the low resolution display of windows 7 and it won't allow me to go to the Mac menu bar. Is there a shortcut I can use?

 

I am quite new to the Mac. Can you please explain how to go about uninstalling Parallels on the Mac (as I believe it is different to Windows.)
Also once it is uninstalled where do I find the programme to reinstall?

 

You can use CTRL+ALT key to release the mouse from the virtual machine then you can reinstall Parallels Tools.