As I said, ONLY M-Audio interfaces will work. You already know that their drivers are suspect and the hardware is mostly obsolete. Trying to continue using either old hardware or old software is likely to be frustrating, at best(why I suggested newer). The odds are very good that newer Pro Tools(not M-Powered and not LE) will work with the UR44(check with Steinberg for compatibility).
M-Powered 8 does require the 8.0.5 update for use with Windows 7(not sure if would work at all with Windows 10). So, if you don't have that update installed, it may be worth trying