Have tried this and still same result. Noticed in their instructions the Usermode ISR box has '' Mmtimeru.irq'' in box. When I try to open Studio 11 the Username ISR box has nothing listed in it. Not sure if that has any bearing. Really hoping to not reinstall software as feel there must be an easy fix to this as noticed several people have ...

Tried this and still didn't work. Really don't want to reinstall again as feel there has to be an easy  fix for this.

 get error message when launching Studio 11 - says 'No IRQ driver selected'' '' initialization failed'' has worked for years until today?