Computer Wont Turn On. Fortunately, you can get a pretty good idea by noting how and when the PC fails. Pressing the start switch and discovering your computer won't boot can be worrying, but the solution is often simple.
Does your PC turn on for a short period of time and then crash unexpectedly? If you're uncertain if the computer is turning on, check if the case fan (generally on the back of the computer) is spinning. Fortunately, you can get a pretty good idea by noting how and when the PC fails.
If your laptop still not turn on, may be the problem from the hardware side.
I just got this for Christmas.
If Windows won't shut down despite repetitive attempts, there's probably a problematic element on your machine. Press the power button to turn on. If you have a desktop computer that will not turn on, using the following information and troubleshooting steps may help you fix the problem.