What's the problem of my pc?

Remove the RAM and install it back again or maybe there is something wrong with your ram. You've got to change it. Buy a new one then install it. Youre pc will surely turn on.

well friends.it's possible that there're viruses in your computer.you'd better contact with the supplier of the computer or reinstall your operator system.i was facing the very same problem months ago.i solved it with the last method.since that,i installed a more stronger anti-virus system to avoid this situation coming again.good luck.