Assuming its a VE ?
Which side ?
I bet its the Drivers side ?
Wont be a Fuse because the other windows work ok ?,
Wont be a short,
Possibly it wont be a relay,
Try my link below, that may be the fault your chasing -
I don't no, your leaving us blind too, first thing I be doing is testing power at the regulator if none is present then remove the kickboard and test the wire there if no power their then test the switch. Also see if its getting earth.