G780 wireless doesn't work anymore; the networks are but cannot connect

I have a G780 bought earlier this year. It came with Windows 8, which I still use. Everything was working fine until today. All of a sudden I can't connect to my wireless network (I have a router that can have a 'network of comments' in addition to normal and I can not connect to one of these). I had been fiddling with the settings last night, but everything was working well. I can connect with other devices, so I know that the networks work.

Networks appear in the list of available networks, but every time I try and connect it just doesn't work. To make sure that I wasn't just typing the wrong passwords I tried to disable all security on one of the networks (so it was a totally open network without password), and the laptop still unable to connect. I tried to reboot the router wireless, by restarting the computer, update the driver for the wireless card, uninstall the drivers and reinstall them, activation and deactivation of the wireless card, by unchecking the option to disable card wireless to save energy and last computer ditch effort that I even did this "Refresh" of Windows 8 option that uninstalls all programs you install and resets the default options. Which included also to uninstall my antivirus program, so I tried to connect without that too. Nothing has made any difference.

Edited to add that I also downloaded and ran the diagnostic tool on the Lenovo site for my laptop and the version of Windows for wireless network problems and it did not show anything.

I'd appreciate really no indication as to what to do next. I'm good enough at the end of my mind with this.

It's the weirdest thing ever. I decided to give it a try once again just for the heck of it and like magic it works all of a sudden. I can now connect to two networks very well. I have nothing after my last try yesterday evening except put the computer into hibernation... I don't know how it works now, but I appreciate the help! I'll create a restore right now, just in case. Thanks for your replies!

Tags: Lenovo Notebooks

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