I just upgraded laptops and am running Windows 10 now with Sonar Professional. When using Windows 7 i was able to install the REAC driver and i was set when connecting to our Roland M200i board to record us live. Now Windows 10 will not see the REAC driver as being installed and will not show as an item to be selected in the audio settings. Not sure what to do, any ideas?

The REAC driver is written by Roland. Perhaps you could contact them to find out if they will update the driver. They have current devices that use the REAC driver so perhaps they'll update the driver for your device.
In the interim you could try installing the driver in compatibility mode.

Right click the driver installer file and select Compatability mode and try the various types to see if you can come up with a setting that works for you.

I think Roland has a forum for users of the M200i and associated devices. Have a look.