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16 Jan 2010  

Windows 7 Ult, Windows 8.1 Pro,

Your E1505 doesn't show as supported for Windows 7 by Dell. From what I could find out, the Vista network drivers may work better than the generic ones that Windows installed according to everything I have read about your machine.

This assumes that your E1505 is the problem machine.

You might also try running the Windows 7 update advisor.
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