My solution was to right click on the desktop, click on Properties, Settings, Advanced, Troubleshoot, and set Hardware Acceleration one slide to the left of Full, which disables cursor and bitmap accelerations. Mouse cursor is now working fine. It took a long time getting to this fix. Hope this helps out.

Sounds like yo had the same Problems that I had with my 5200 geforce The install did not go well. what was happening was the direct x was binding to the old mother board graphics system and not the new card . to make it rebind just change the refresh rate in the nvidia icon in your task bar . disable the display adapter from device manager for the motherboard graphics .put the card in the slot change the monitor cord boot up check you direct x by typing in run dxdiag and test directx to be sure it is running with your card you can also see that from the about nvidia you must have the driver for the card installed to do all this.. hope I helped install the driver first then disable download latest drivers here http://www.nvidia.com/Download/index5.aspx?lang=en-us