I've had this laptop for 2 yrs. The last time it turned on, the battery was said to be "Poor-replace"
I bought a supposed "New" one (genuine HP) on eBay. Mind you, I got the battery for $20, shipping included. Before it arrived, my laptop suddenly wouldn't turn on. The jack that the power cord plugs into no longer lights up when the power cord is plugged into it, either.
My new battery didn't do anything to solve the problem. One day my computer turned on, the next it didn't. It still doesn't turn on, nor does the jack light up when plugged in.
Remove the battery, plug in the power adapter. If it works it's the battery(s) if not it's the power adapter or the connector on the laptop. Try another power adapter from someone with the same power adapter as yours.
Note all power adapters do not put out the same voltages and do not use the same connector. So be careful.
Kensington makes a power adapter that is universal and works in cars and airplanes that is less expensive than the ones sold by HP.
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