I am trying to migrate a Server 2003, Exchange 2003 OS to Hyper-v on Server 2012. I used disk2vhd. Configured the Hyper-V machine. Fired it up. Looks like it worked fine, except neither keyboard nor mouse input are captured. I cannot login or do anything. Even using the CTRL-ALT-DEL button from Hyper-V does nothing. CPU usage is about 3-5%, so it does not appear to be frozen. If I hover over the mouse or keyboard icons, both indicate they are not captured.
I have no idea what to do about this and can't find one single case in the forums.