Hi,
Somebody had the same problem with their laptop and it ended up being a motherboard problem since it short circuited. Here are some troubleshooting steps that may help.
- Start with a hard reboot, unplug it's AC adapter then press and hold the power button for 20 seconds then try booting it.
- If it doesn't work reseat the RAM, remove them all for couple of second then put them back in making sure everything is seated properly.
- Next to try is if your AC adapter is still okay by trying another AC adapter that has the same voltage and see if it would work.
- If all these will not work then the problem is with the motherboard.