My internet connection says limited? Windows 8.1?

My internet is good. All of the others computers Wi-Fi works, except mine. (macs and iphones and ipods…) I have reinstalled the Qualcomm Atheros AR9485 Wireless network adapter (my internet thing) that didn't work. I have also tried the commands prompt commands, and yes my ip matches it with the ipconfig thing. And yes my "Allow the computer to turn off this device to save power" is unchecked. Please give me some help. Even if its the same commands i have mentioned, i will still try and reply! Please. I will post pictures if needed.
I'm using my sisters macbook pro if you are wondering.
And also, resetting the router doesn't work. Thanks for
your help if your gonna help! Anything will do!

Added (1). My network adapter is Qualcomm Atheros AR9485 Wirless network adapter… It won't work
to use other ones. Maybe, but i've tried like 5-20 and they all don't work or can't connect!
Sorry!

You need to change from the windows driver (default) to your adapter. I had the same problem
Here's the instructions:

# Open Device Manager (search Windows Help if you don't know what this is)

# Select 'Network adaptors' and then open (double-click) Broadcom 802.11n Network Adaptor

# Go to the Driver tab and click the Update Driver… Button

# Select 'Browse my computer for driver software'

# Select 'Let me pick from a list of device drivers on my computer'

# Select the "Broadcom 802.11n Network Adaptor (Broadcom)" entry from the list, and click Next

Windows 8 does that a lot for me too. I seem to have to sit right next to the modem or be directly connected to it through wires for any good connection.

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