Hello. One day, when i started my computer up. Suddenly, it freezed. Then I just restarted it, on the power button. And after that, I didnt get any signal at all to the screen. It just says " No signal " . I have tryed the screen on other computer, and it works all fine. The keyboard, dont turn on either anymore, it dosent work on my computer, but fine on others. What can this be, anyone can help me? Im not very good at computers, but I know several things, so im not completely lost. I will be very happy, for any response and help.