There is some issues with the dv____ series and the problems begin with innocuous problems like this and the owner is incensed later when it fails out of warranty and HP wants them to pay for the motherboard.
Be sure to uninstall Zone Alarm for a test too. (wild guess, but I uninstalled 2 last month.)
I have an HP Pavilion dv9310us notebook with Vista Home Premium. I have not made any changes recently, but three days ago, everytime I perform a shutdown, my notebook restarts. I am forced to power down using the power button and I know this is not the correct way. Sometimes when I power back on, the Windows Restore/Repair screen comes up but sill it continues to cycle through restarts. I did a system restore back to when it was working correctly and it did not fix the problem.
Does anyone have any suggestions? Thank you in advance.