my computer is self-built and has been working for almost 2 years. Now, this morning I booted my computer, all my motherboard lights went on (this is normal and lasts like 2-3 seconds) but then instead of booting normally it just stayed in that state indefenitly, like it couldn't reach the second booting step.
I couldn't shut down the computer so I unplugged the power cord, replugged, now my computer doesn't even turn on, all lights are off (even the cmos light at the back of my computer).
I tried taking out the battery and putting it back in 2 mins later. Nothing.