This morning my computer restarted itself after carrying out a Windows Update, unprompted, as usual. However, when I woke up and logged in my wireless network would not allow me internet access. Instead I get a yellow exclamation mark over the signal strength bars. In addition to this the windows wireless tool just displays "Identifying... (Tiscali)" constantly. It is sending packets but not receiving any what so ever. In addition to this, and I'm not sure it's relevant or not but I am using Avast! anti virus and it's "Web shield" function will not turn on. I have tried a wired connection with the same result. I have also tried another router wirelessly with the same problem. Usually this can be fixed by a reboot of the computer and/or the router however no such luck. I have tried a few things i.e. updating drivers enabling/ disabling the adaptor. Any help would be greatly appreciated. Setup:- Laptop - Medion E7217 Router - Simens SE587 Wireless Adaptor - Realtek RTL8191SE OS - Windows 7 Home Premium IS - Avast! Free anti-virus Windows firewall.