You realize your old computer was probably 32 bit OS system and your new computer will most likely be 64 bit.
So which version of Sonar did you install, the 32 bit or the 64 bit?
I don't think Sonar 7 was fully integrated into the 64 bit environment yet and the plug ins might all be still 32 bit.
If you look back here to threads from 2009- 2011 there are thousands of posts about the plug in issues with upgrading to 64 bit.