Hi,
Please do try these troubleshooting steps that I've suggested with the others who had the same issue.
- Start by doing a hard reset, remove the battery and AC adapter then press and hold the power button for 20 seconds then try if it will boot up.
- If these will not work test the AC adapter to see if it's supplying enough voltage to power the laptop or if you have another charger that has the same voltage you can use try it and see if it will boot up normally.
- Next to try is to reseat the RAM, remove them all for couple of seconds then put them back in making sure that they are all seated properly.
- If there are lights on your laptop indicating that it's on connect an external monitor and see if you'll get any display from it...