The dv7 is well known for many irritating failures like that. The battery advice is an odd one since without the battery you risk losing the installed OS with a power dip at the wrong moment. But we did discuss how much more life you get from pulling the battery. The low end got you 5 per cent and the high end double.
But all this worked out with no use of the battery and hence none of the benefits of the battery!
Hope it's under warranty and let them fix it.
I am using this laptop for the last year.Lately,the entire row of touch-buttons above the keyboard,which are LED also,do not work.The weird thing is that the ones of the sound and the wireless are switched off permanently,and the other media ones (forward,backward,stop,pause) are switched on as they used to be,but they are not responding on touch,they do not work.One only thing i can get suspicious of,is that i tend to use laptop with no battery,only on AC,to extend the battery life,when on battery.I wonder if this,can cause the "burning" of the leds/lamps, when a power failure occurs.I also have the num-lock light "burned".Last detail,in case it helps somebody to come to a conclusion.Thanks in advance!