The system was working fine the last time I used it. I turned it on this morning and now the controller won't connect. So I'm trying to resync it to the system, and I get to the step where it asks me to put in the four "card" symbols displayed on the TV. Only problem is, the TV isn't showing anything. I tried it with other inputs (cable box, DVD player, etc) and it works fine, so it's not the TV. I've tried unplugging the Wii U to fully power it down, I've checked the HDMI connection to the TV, everything. Still nothing. The only fix I can think of is to try the 256 possible sync combinations until I get the right one (assuming the Wii U doesn't shuffle the required code every time you make a new attempt). Obviously, that's not something I want to do, so I'm hoping someone here has a better solution.
(I'm looking at you Mario. I know you patrol these forums.)