I have not one, but two dv9000 series computers with the same problems. This computer is virtually the same as the 6000 series (which my son had). The older one, a dv9009 was purchased in late December 2006 and was sent back under warranty in early April 2007, at which time they replaced the motherboard. In early August 2008 I gave the older dv9009 to my husband and purchased a dv9700. In May 2009, the dv 9009 wireless stopped working and because it was "old" we purchased an external wireless card. It was also at this time we also began to have trouble with the computer not powering up, sometimes for days at a time. In mid August 2009 the dv 9009 ceased to power up at all.
On September 24, 2009, the dv9700 went black in the middle of reading my morning emails. I hit the start button, it started to reboot, the screen flashed a jumbled mess, and the hard drive powered down, then up, then down, then up, etc, until I disconnected both AC and battery power. I had to be out of town for 10 days so my computer sat idle during that time. After my experience with the previous 9000 I thought I would try again to boot, but it still does the restart over and over but the screen stays black. HP was contacted on September 24, 2009, and again today October 7, 2009, but they refuse to consider the 9700 under the enhanced warranty even though it seems to be suffering from the same symptoms as the older models. Supposedly this model was manufactured after the problem was fixed. Tell that to the thousands of dv9700 owners on the net looking for solutions to the problem.
I don't know about the rest of the people but, I had previously owned both a desktop and an older HP laptop that were good products ie: lasting more than 3 years, which is why I purchased a 3rd and even after it needed repair, a 4th computer from them. I am extremely disappointed that they will not fix what is a KNOWN problem with this product. I have obviously been a loyal customer, and would have continued to be, if there were customer service, but there isn't. If you manage to get a class action lawsuit going on this, or if I can help with any other information, PLEASE contact me.