Step 1 - download VH's cgminer from the 2Pac thread. It's got better support for Compacs as a side effect of the 2Pac being built from the original Compac design.

Step 2 - learn a bit more about what the volt-setting pot does. Also look into what the default operating frequenc is if you don't specify one; this is software-dependent.

Step 3 - Windows 10 sucks and you should probably get rid of it.