I think I may have run into the same issue myself the other day, and it occured when I was using Microsoft Remote Desktop* to connect to the machine where I was installing Intel GPA. (As you can imagine, I have lots of machines that I use for testing purposes, so Remote Desktop and VNC get lots of usage!).
Though this should be an OK install, I did run into issues where I had to manually kill the installer process even after a reboot.
Does this describe your issue as well? Any info you can provide that would help others from running into the same install issue would be appreciated.
ps-> I have also let our install team know about this; I'll let you know whether there's anything they have to say about the issue