Game is currently bugged for Win7 and Win8 users, the workaround for now is to run
Process Monitor in the background. ProcMon64 is the one you'll want. It needs to load a driver and may need to be run as admin if it fails to load. The default settings will eat your RAM but you can limit the log to 1 Million entries in Options -> History Depth.
Some users have said that the program refuses to run and have had to grab older versions to run. Microsoft doesn't seem to host a public archive themselves, but you can grab an archived copy on the
Internet Archive. Running Windows Update can also help if the latest version doesn't work and is probably a good idea anyways.
Additionally, I believe Taleworlds is looking for more information on this problem, so if you have the time and the inclination I'm sure they'd appreciate a copy of test.tmcap captured through the performance test branch thing.