I have a HP Pavillion zd7000 laptop that has an issue with the volume control. I recently replaced the hard drive and reloaded the OS from the OEM disks. The problem existed prior to my reloading the OS and after as well. I am running WXP pro SP2 and have done all of the updates for the drivers as well as the os. The problem is when I move the slider up to increase the volume; it will stay in position for a second and then gradually slide back down to the minimum position within a few seconds. The same will happen if I use the volume buttons on the keyboard. It appears the sound card and speakers are not the problem because I get sound while it is in the increased portion of the slider. Then loose it quickly as the slider moves itself back to minimum. I have checked the sound components for errors in the device manager and have none. Any ideas would be greatly appreciated.