HP laptop cannot boot up or charge battery after battery went flat for 12 hours

Cobalt006

TS Evangelist
Try removing the battery and power plug. Then hold the start button down for about 5 seconds. Then plug the laptop back in see if it boots up. If so then power down the laptop and reconnect the battery. See if it will charge then.
 

herbalfire

TS Enthusiast
Is their a charge light on the laptop? if not have you checked the charger it may be just the fuse but if you can try a differant one and see if it works.