Cannot install current Itunes!

I have had Itunes for years, and only recently with current Itunes updated version the whole operation has crashed. A week ago for some unexplained reason I could not open the Itunes, error message appeared stating that I would need to re-install the Itunes. I had removed all possible Apple related programs and files, re-started PC, and tried to Download Itunes again. I run Itunes installation as Administrator. Every time when the installer reaches "Start Services" message appears stating: " Apple Mobile Device Support failed to start. Please confirm privileges" etc. I went to PC's "Services" and could not manually start Apple Mobile Device either. The installation message leads to either "Abort, Retry or Ignore" function. "Retry" does not get me anywhere, "Ignore" and "Abort" installs the Itunes with no Apple Mobile Device service function. Newly installed Itunes cannot be opened, Apple error7(Windows error 193) appears on opening. I had tried to connect my Apple Shuffle on installation and it did not make any difference. I had also tried to install the Itunes via different browsers, all attempts failed. My Windows are up-to-date, no troubles here. Any ideas on what is actually happening?