Other picture quality problems with webcams can be addressed by changing the video capture properties for the webcam.
In case no driver for the webcam can be found, you can try a third party driver finding program that scans your PC for installed hardware and allows you to install missing drivers.
If this fails, the next step would be to uninstall the software that came with your webcam.
One of the very first step is of course to check your webcam connection.
Most webcams use the USB port to connect to the PC, so check if your USB cable is properly plugged.
After uninstalling the software, restart your PC and then reinstall the webcam software. Depending on the software, you might need to unplug your webcam during the software installation.
For many HP systems you need to install the Cyber Link You Cam software, which can be downloaded from the HP site (for Windows 7 and Windows 8).I use a chat room which uses adobe flash for webcams to video conference.I've used adobe flash for webcam purposes for years without an issue but all of a sudden my outgoing video/audio doesn't work and incoming audio/video is very choppy.A blurry image can sometimes simply mean the webcam is not in focus.Adjusting the focus through the ring can solve that problem.But is does not harm to check if your Java, Flash and Quicktime software are installed and up to date.