Why does my wireless home network work on Vista but not Windows 7?

Hi,

my PC is now double boot, Vista on one drive, 7 on the other. The internet was accessible through both, then all of a sudden it stopped on Windows 7 and I can’t see why as all the settings are the same as on Vista.

Please can anyone advise on what I can try? Obviously I’ve already ran network disagnostics etc.

thanks