rolli59 said: Have you tried the other outputs? DVI VGA
rolli59 said: So basically there are 4 things that can be wrong HDMI cable, DVIport(unless you are using adapter DVI/VGA), HDMI adapter and HDMIport on your monitor.
rolli59 said: And you only have one adapter and one TV. Did you pick up either at a store close by recently?
rolli59 said: You will have to try either one to rule out one or the other. My suspicion would be the adapter first. I take it that you have changed the input on your TV in menu to hdmi prior to posting here.