A couple of weeks ago a customer brought in an HP DV9000 series laptop that was sluggish and he said the wireless wasn't working. We figured it was a virus or some other not so nice hardware conflict, but after a re-installation of the OS the problem with wireless not working persisted. We tried some drivers and after several failed attempts found a post online about many many of these occurrences in the DV series, ranging from the wireless problem to black screens and more.

I finally stumbled onto this page detailing the models that have been given an extended warranty that if I remember correctly runs out in September or there about. So if your computer is exhibiting symptoms it's worth the time to see if your particular model is covered. We were able to get the customer a replacement motherboard and other fixes because of this warranty extension completely free of charge (including shipping!)