Cannot connect to the wireless networking

My Toshiba Laptop was preinstalled with Windows 7 Home premium 64-bit OS, and it had been working quite well with the wireless BB. However, the wireless internet connection was on and off within recent weeks, while the other mobile devices, such as iphone, ipad, or laptop, in my household had no such problem. The wireless signal was so strong, but the error message always said 'Windows cannot connect to the wireless networking'. It seemed there was something wrong with the wireless adapter.
I got a new TP-Link wireless adapter properly installed. Luckily, this worked; but unluckily, this worked for less than 24 hours. It was really frustrating that I, as a full-time student, depended so much on wireless networking.
Please help!!! Harry

Hi there
You may want to enlighten us with:
- What model are You using (f.ex. L300-123)
- What BIOS version is installed?
- What WLAN driver are You using?
All these questions are answered in PC Diagnostics found under Toshiba app folder in the start menu.
BR
Tom

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