Yiynova tablet monitor "device driver failed to install"  

I have a Yiynova tablet monitor and its been working fine for about a month. I recently tried to download the beta version of a NVIDIA GeForce update (bad idea) and had to reinstall a previous version. After that, things started to go south for my tablet.

I uninstalled and reinstalled the tablet driver, and tried to plug it in a different USB port and it came up with the same message.

Is there a step that I'm missing?

I have dual screen setup, and that's working fine, but the driver that senses the pen just isn't installing, even though I installed the driver program.

I appreciate any ideas on how to fix this.

The problem wasn't solved, but I believed I narrowed down the problem. The driver doesn't seem to fully install.