I have noticed with one of my PC's that if an external harddrive is connected during boot up, that it is delayed. It too did not seem to matter if the OS choice was changed. IMHO, the BIOS is looking at the devices that are connected whether they are chosen for boot or not. Until it resolves the items, it delays the startup. If the delay bothers you, then leave the Plantronics DA70 USB sound processor disconnected until after bootup.
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