Hello, I recently posted about my Great Wall computer not coming on. I have another computer, a gateway. The power button comes on and when charger is plugged in, the light comes on so I know the battery is fine. When i turn on the computer, the fan spins (I hear the sound it makes for like 3 minutes and it stops). I checked online before and they mentioned rebooting with instructions. I did reboot and it did come on however after i turned it off, it never came back on, even after trying to reboot. Can you tell me what's wrong with my computer?