Mouse Cursor is a Dot in a Hyper-V Session

I created a new Hyper-V session with Windows 7 as the guest OS the other day.  After installation was complete, even though Win 7 has integration services already available, the mouse cursor rendered as a very small dot, not the usual error.  I googled and found this thread (See the post by Kent Nordstrom near the bottom).  It turns out if you delete the "Microsoft Virtual Machine Bus Input Device Miniport" and reboot, the problem goes away--at least it did for me.