Hi,
Here are some troubleshooting steps that may help.
- Start by uninstalling/reinstalling the Wifi adapter.
- Go to Device Manager and uninstall the Wifi adapter.
- Reboot your laptop and it should reinstall the driver automatically upon reboot.
- After the reboot do test it again and see if your laptop will now connect to your wireless network normally.
- If it will not work run System Restore, bring your laptop back to an earlier date or time before the problem even happened.
- Here's how to run System Restore:
http://windows.microsoft.com/en-PH/windows-8/restore-refresh-reset-pc
- If System Restore will still not work last option would be to reinstall Windows.