I have just bought a RBP3. But I can't seem to boot it. I have gone though quite a few post, but they seem to dicribe different problems. So I using I plasma TV, with a hdmi cable. I downloaded noobs and installed it on I micro sd. As I couldn't find my wifi network on the raspberry (?) and I only saw raspian, I disided to hooked it directly up to the modem with a cable. Then I selected raspian and openELEC. When I boot up on raspian, I get the rainbow, and all of the tekst (over the screen), the the screen goes black (whit blinking cursors in the left top) and nothing happens. The fist , say 20 seconds, I see I green led blinking. After 20 sec this stops to. The strange thing is that I can get openELEC to boot and running?
What I am doing wrong?