My Pi is not starting up. None of the lights go on. I've searched online for similar problems but couldn't find anything.
HOW IT HAPPENED:
I was controlling my Pi with my laptop using PuTTY. Then I wanted to connect my screen to the Pi so I disconnected the power, connected the HDMI cable and reconnected the power and then nothing happened after that. Thing stays dead. I did notice that when I connect the power the power LED gives a very short blink, but nothing else.
TRIED THE FOLLOWING:
Three different power adapters. They all charge my cellphone. One is 1 A and other two were 700 mA.
Tried re-imaging my SD card.
Tried a different SD card.
I left the Pi for more than 12 hours without power.
Nothing seems broken on the board. I really don't know what to do.
Any suggestions? Any idea what I did, or am doing, wrong?