An Acer Aspire 5520-5142 laptop I have will not have internet access if the router's wifi is encrypted (with anything, WPA,WPA2, WEP...), but will work fine if it is not.
I have tried the following:
- Updated Router's Firmware
- Have the latest wifi drivers for laptop
- Turned off firewall
- Reset wifi drivers
- Reset router
- Disabled all AV software
Why does this happen and how can it be fixed or diagnosed?