After returning back to the student dorm from the holidays, my cintiq will no longer display anything. The power light is blue, and it registers pen movements. It just won't do any good when the screen is completely black. I found a thread in the Wacom forum, where someone has the EXACT same problem as me, but the suggestions there didn't work for me. I'll add a link to the thread below: http://forum.wacom.eu/viewtopic.php?f=3&t=8396

Computers & Internet - Wacom - Cintiq - Cintiq 21UX (CINTIQ21UXNR)