Hello Ric how are you today?
I'm a real person person and I will attempt to assist you if you would like help with this problem.
Yes I am a real person and my apologies I did not see the response to this screen until now. Have you tried removing the battery and the power to completely reset it and turn it on again?
Hey Ric sorry for a later response I'm usually on in the evenings. I looked at a better picture of the laptop and it is odd that it does not seem to have an external battery. Did it used to work without being plugged in? Most laptops even if they aren't easily accessible will have a battery pack, it's almost pointless to have a laptop with no battery. I don't think the BIOS battery will change anything but if you are able to locate the main battery and unplug that while unplugging the AC power that may help. I just attempted finding a manual to help you with this but could not find a manual, is the computer old? If you removed the battery and power, and you still have the same problem, I would agree with you that the motherboard is indeed dead.
What is the model again? I see what you wrote above but I just want to confirm it, I wasn't able to find a manual on the laptop which was odd. I am wondering if maybe the power button is somewhat stuck? Can you push it somewhat hard and manipulate it some in case it is stuck?
If it is stuck it may not be allowing it to turn on correctly most computers do not like if the power button is being held down continually and it will make them act oddly, it is basically telling the computer to turn on and then immediately telling it to turn off then on and will act oddly. OK I'll try to find that model again for a manual.
Is there any other model names or indications on the laptop?
Is it a zenbook or any specific type of Asus? I'm having trouble finding anything under that model number. Is it a laptop or desktop?
Ahh OK there we go!
That's alright I was really confused usually I don't have trouble finding manuals =) OK so it does seem you are correct the battery seems to be internal, I am going to look into how much trouble it is to remove it. Have you tried manipulating the power button some? It really is acting like the button may be stuck. Also, you mention it is a year old. If it is under a year, this may be still under warranty?
OK I don't know why Asus did it like this but it is an internal battery as you already know. Before attempting opening it, please verify first if it is still under warranty. I have not been able to find a specific video of that exact laptop being opened to get to the battery, but I have a video of a more recent Asus laptop which also had an internal battery.
OK did you follow the instructions above about removing the battery?