Windows 7 Problems: Wireless, shut down, volume & iTunes issues
All Windows 7 problems rolled into one, from issues with wireless connectivity, the system not shutting down, and both volume and iTunes issues
As is the case with any operating system, whether it’s OSX, Windows or Linux, users are likely to encounter issues from time to time.
More often than not these problems can swiftly be patched up by an update of some kind, most likely released by the software’s creator.
Windows 7 Problems: Wi-Fi
Some users have reportedly encountered issues with Wi-Fi connectivity, claiming that internet connection dives when the computer goes into sleep mode – and only patches up once a restart is employed.
Windows 7 Problems: Shutdown
Some users on the Microsoft forums have claimed that their machines won't shut down. Like a stubborn child, the machine refuses to go to sleep and continues running as normal.
Suffering from this issue? You can try the following solution (courtesy of Microsoft forums user M22472) to disable 'Wake on Wireless LAN’).