I have a HP Photosmart 6520. A few months ago I did a system restore on my computer because i was having some issues. Ever since then, my printer will disconnect from the computer and then reconnect all on its on. I tried putting the printer in sleep mode but it still does it. When it reconnects the HP logo comes on the screen of the printer along with like a "loading bar." Can someone help me fix this? It's quite annoying hearing it all the time (the sound of hardware being plugged into the computer and then unplugged). Thanks.