Q: my daughter has a macbook pro and on occasion has difficulty hooking on to a home WIFI. She has no problem in most locations.
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Sep 23, 2012 11:43 AMby CMCSK,HelpfulChange your router channel. Sometimes this is all you will have to do.
Power cycling the router. Read the router's user manual if using one of Apple's or contact the tech support department for instructions if using a 3rd party router.
System Preferences/Internet & Network/Network
Unlock the padlock
Locations: Automatic
Highlight Airport
Click the "Assist Me" button
In the popup window click the Diagnostic button.
System Preferences/Network- Unlock padlock. Highlight Airport. Network Name-select your name. Click on the Advanced button. Airport/Preferred Networks-delete all that is not your network.
Place a check mark next to "Remember networks this computer has joined." Click the OK button and lock the padlock. Restart your computer.
http://support.apple.com/kb/TS1920 Mac OS: How to release and renew a DHCP lease
No internet connection (wireless)
Check to see if an extra entry is present in the DNS Tab for your wireless connection (System Preferences/Network/Airport/Advanced/DNS).
Delete all extra entries that you find.
Place a check mark next to "Remember networks this computer has joined."
Other resources to check into:
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
Configuring 802.1X in Mac OS X Lion and Later
Non-responsive DNS server or invalid DNS configuration can cause long delay before webpages load Netspot
How to diagnose and resolve Wi-Fi slow-downs
Mac OS X 10.6 Help: Solving problems with connecting to the Internet
What Affects Wireless Internet?
Solutions for connecting to the Internet, setting up a small network, and troubleshooting
