The MS-2 is back with it's owner and working with Windows 10.
The MS-1 and MS-2 motherboards are no longer available for repairs. The MS-2 can be upgraded by installing the MS-3 motherboard, back panel, new install CD and wiring harness. Doing that now for one customer that had the MS-2 motherboard fail. Moving over the MS-2 memory and 60GB mSATA drive went well and now waiting on the new DVD wiring harness to complete the system. This unit was still running Windows 8, so it will remain with that OS installed.
For MS-2 and MS-3 owners, please keep all the Windows OS, Install disk media and WiFi antenna for the system. The WiFi antenna should be installed even if not in use. The WiFi modules do not seem to like no RF load. It can be installed and left in the horizontal position if that is easier than vertical.