Hi,
Here ares some troubleshooting steps that you might want to try, you might have done some of the steps listed but you can just skip them out.
- Do a hard reset first, remove the battery and AC adapter then press and hold the power button for 20 seconds then try to boot the laptop.
- Next is to test the AC adapter and see if it's supplying enough voltage or better yet try another AC adapter that has the same voltage.
- If that will not solve the problem do reseat the RAM, remove them all for couple of seconds then put them back in making sure that they are seated properly into each slot.
- If all these will not work you may need to contact the manufacturer for a repair if it's still under the factory warranty.