My notebook model number is "HP PAVILION TOUCHSMART 15Po20ca".
When I was operating my notebook, batttery became nill or at zero % charge. After charging more than 1 hour, when I on the laptop, the monitor remained black but computer became on. Only the monitor remained black. Still now monitor dosen't work. Now what can I do for the solution of this problem? Please give me a solution as soon as possible.