Hp laptop power & keyboard light on off continuously - hp elitebook 820 g1 not turning on issue

pressing power button turns on keyboard light but nothing show on screen

hp laptop power led blinking continuously no display

hp laptop power and keyboard light blinking continuously

hp 820 laptop power button light blinking

hp laptop caps lock blinking

hp elitebook 820 g1 caps lock blinking

#hp #elitebook #820 #g1 #power #button #keyboard #light #blinking #continously #nopower #nodisplay