I have one of these MPI7001 7inch capacitive touchscreen device. This is documented in this link here.
I got it to work (display and touch) on Raspbian. However I need this to run on my windows 7 Embedded device. Display works ok but touch does not work at all.
I tried various thing and also looked for the "pen and touch" settings in the control panel. However this is not even available in windows 7 embedded.
Any help you could give me? Where to look?