I was working on my laptop yesterday when suddenly the screen went blank. The laptop wasn't responding, so I held down the power button to force it to switch off. Now the laptop won't boot up. The battery charge light is on and when I switch it on the power light comes on. The other light just briefly flashes on. I can see the fan runs a few seconds and stopped and never runs again. Any ideas? The laptop is only 12 months old!
thanks for your info. I have followed your steps. I have power on first time, then it comes on the screen but after some times, it frozen and couldnt go ahead. then I have switched off using the power button. and I tried next time but same nothing comes on screen. the fan not running at all.
When you tried it the 'next time'... did you remove power/battery and let it sit there again for a few hours?
I am guessing that either your power adaptor brick or your motherboard is damaged somehow.
Try to boot the system with only a single stick of RAM installed (try both slots too, with each stick...). Try to boot with a USB or CD/DVD Ubuntu Live CD (to check for O/S corruption...). Try just going into the BIOS and seeing if the system can idle there stable - if it can, does it show temperatures and/or fan speeds? Maybe a fan or two has kicked the bucket.
Try to get/test/borrow an identical power adaptor to see if that solves your issue. If all of the above fail to give any relief, I would be looking for a new system (and not looking to 'revive' this system with the chance for it to fail again).