wrong, it is a power issue.

That particular model draws way over the max wattage when on a plane. The DC power adapter made by IGo does work in a car, but not on a plane, so don't waste your time buying one. I tried about 4-5 plugs made by different manufacturers and they all worked in a car, but not on a plane. The over wattage requirement shuts the converters off within seconds of plugging in. The most that a plane power source can put out is 75 watts, and the HP draws around 90 or so.

I was able to charge the battery on a plane but the laptop had to be shut down, so basically it defeated the purpose.

I didn't know much about all that stuff until I made a mistake of buying that particular HP, then I learned. There are few power converter companies that must love me by now. I've bought and returned about 5 different ones.

And just to make my point clear, all worked as like advertised when in a car, so it wasn't the converters.

I finally gave up, and decided to buy another laptop.