Hi, I'm Sadique. Welcome to JustAnswer. I'm reviewing your question now, and will post back with your reply ASAP.
Are you talking about the CAPS Lock /Num Lock key?
Do you see the Asus Logo when you turn it ON?
After the Asus logo, do you see Windows loading screen.
Thanks for explaining in such a detail.
Your laptop is completely dead with only two lights lit.
I am sorry to say it indicates the laptop's motherboard has gone bad and needs replacement.
Before confirming this -- I want to ask a few more questions.
Do you hear any beep or see any flicker on the computer screen.