Hi,
There's one way how to reset the CMOS or BIOS if you can't access it. Open your laptop and look for the CMOS battery. It's a flat circular silver battery, just take it off for couple of seconds then put it back in. Hopefully this will work for you.
If these will not work do try these troubleshooting steps.
- 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 there are lights on the laptop indicating that it's on connect and external monitor and see if you'll get any display from it and if you do press the Windows key + P at the same time and select Display Only then press Enter.
- 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 Asus support for a repair if it's still under the factory warranty.