Battery went bad in my HP HDX X16T-1200 CTO Premium Notebook running 64 bit Windows Vista. I could not maintain power even with AC plug in. Computer was then put aside for 4 months with dead battery still in place. Upon receiving and charging replacement battery, I pushed the power button. The screen was black and stayed black with no error messages. Fan came on at high RMP. LED lights were visible, Internet connection established, etc., but only a black screen during and after boot up. A red light in the mouse showed it was functional as well. No keyboard response either.
I have tried the "hard reset" procedure but didn't work. What happened?
Thank you kindly!!!