I followed the tutorial here: http://www.codeproject.com/KB/library/driver-install-with-wix.aspx but it just doesn\'t seem to want to work - the DPInst exe neve
DPInst
Found it, need to turn impersonate off:
<CustomAction Id='Install_M2_Driver' Execute='deferred' Directory='DRIVER_ROOT' Impersonate='no' ExeCommand='"[dirDpInst]DPInst.exe" /SA /PATH \"[dirM2]\"' Return='ignore' />