Hi Falc,
The unknow device is the webcam driver. I am unsure of your exact model, but HP does have a link for your model here:
http://h10025.www1.hp.com/ewfrf/wc/s...204947&lang=en
If that fails to install try the Vista driver for the webcam (It has worked in some models)
What issues are you having with the graphics?
What driver is installed for the graphis (Version)
Thanks,
Bill