Hi,
Do a hard reset first, remove the AC adapter from your laptop then press and hold the power button for 30 seconds and power it back on. If this doesn't work you may need to open you laptop to get access to your battery and RAM's. You'll need to reseat the RAM to make sure that they are all seated properly into each slots. And regarding the battery try taking it out and connect the AC adapter without it and see if you'll get to boot it up normally without it. Lastly, if your not comfortable in opening your laptop try and hook up and external monitor to it and see if you'll get any display. If you do it's you display which is faulty.