I have the Acer Aspire Notebook 5734Z-4725. I have had the black screen with the USB sound going off. I've been getting a pop up saying I can use a faster port but close it because I don't know about ports and don't want to screw up my computer and the pop up notice saying the camera is in use. I have deinstalled/reinstalled the driver. I have also done a system restore on the computer which set it back to factory settings that didn't work. As far as I can tell it is the same driver. Sometimes it seems to be working fine like the video will work but this is very rare and if I move my computer it puts my webcam back to a black screen. My webcam doesn't work with skype, ooVoo, msn, yahoo nothing.please help i'm so tired of it not working it has been like this over a month i have been on the internet for hours looking for a solution.