I upgraded to Windows 7 Professional 64 bit the first month it came out and have been very pleased with it because I've had a more stable user experience.
Today I encountered my first woe, probably related to Windows 7. My DVD burner can only write CD's with Windows Explorer. As soon as I insert a blank DVD disc the system tells me to insert another disc.
Plan B is to not use Windows Explorer to write a DVD, instead I'm writing now with a tool called Free Easy CD DVD burner V4.0 provided by Koyote. It does the job just fine on my laptop, so I'm happy.
I visited the official HP web site to look for newer drivers however none were listed for my Pavilion DV9820us