I had a similar problem with my Roland xr ( couldn't get usb driver to work with windows 8 )
Got a 4x4 to handle midi. No sound, but midi lights on xr. Went into system and turned midi thru to off it worked for me.....


hp envy I5 6 gigs ram 2012.5 biab sonar x2 in studio
2 Blue Shoes Band 14th
hardest working band in St Thomas"