Quote from: Robert Holsting on September 27, 2012, 14:12:00One question though: Is a normal behaviour that the speakers "pink-noice" (Hissing kind of sound) a little RIGHT after power-on, before Win starts to load?
This is fairly common hardware problem with 7720, unfortunately. Some folks had their motherboards, speakers and power supplies exchanged under warranty. My 17R SE has the same issue, but since it is a refurb, it is going back to the factory for a refund. Contact Dell and they will sort it out. You may try getting rid of audio drivers and let Win7 install generic driver first to see if that helps.