LindeePierce
Level 1 (0 points)

Q: slow internet speeds on Macbook but modem is fine

I have a PC, iMac, Macbook & iPad all running on the same modem. I have called Comcast, reset the modem with them, tested the speed on the PC ( which is hardwired) and the iMac (which is wireless) and the download speed is high 50's. But when I run my Macbook Air download speed is 3-4 mbps.

It is not a Comcast problem, and its not Safari. I have emptied my cache and it also has issues on other web browsers. And I have restarted my laptop. Nothing works, nothing even helps in the slightest bit. I might just have to make a trip to the Apple Store, but I thought I'd try here first, any other suggestions? Thanks!


MacBook Air, OS X Mavericks (10.9.4)

Posted on Jul 19, 2014 10:22 PM

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LindeePierce

Q: slow internet speeds on Macbook but modem is fine

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  • by dominic23,

    dominic23 dominic23 Jul 20, 2014 5:46 AM in response to LindeePierce
    Level 8 (42,129 points)
    Mac OS X
    Jul 20, 2014 5:46 AM in response to LindeePierce

    Power Cycle

    Power off the router. Unplug it from the wall. Wait a while.

    Plug it back to the wall. Power the router on. Wait until all the lights are lit properly. It will take a while.

    Restart the computer.

     

    Start up in Safe Mode.

     

    http://support.apple.com/kb/PH14204?viewlocale=en_US

  • by Linc Davis,

    Linc Davis Linc Davis Jul 20, 2014 8:29 AM in response to LindeePierce
    Level 10 (208,059 points)
    Applications
    Jul 20, 2014 8:29 AM in response to LindeePierce

    Please test after taking each of the following steps that you haven't already tried. Stop when the problem is resolved. Back up all data before making any changes.

    Step 1

    Take the applicable steps in this support article. The Wireless Diagnostics program generates a large file of information about your system, which would be used by Apple Engineering in case of a support incident. Don't post the contents here.

    Step 2

    Disconnect all USB 3 devices. If you don't know which are USB 3, disconnect all USB devices except keyboard and mouse.

    Step 3

    If you're not using a wireless keyboard or trackpad, disable Bluetooth by selecting Turn Bluetooth Off from the menu with the Bluetooth icon. If you don't have that menu, open the Bluetooth preference pane in System Preferences and check the box marked Show Bluetooth in menu bar. Test. If you find that Wi-Fi works better with Bluetooth disabled, you should use the 5 GHz Wi-Fi band. Your router may not support it; in that case, you need a new router.

    Step 4

    Open the Network pane in System Preferences and make a note of your settings in the Wi-Fi service. It may be helpful to take screenshots of the various tabs in the preference pane. If the preference pane is locked, unlock it by clicking the padlock icon and entering your administrator password. Delete Wi-Fi from the service list on the left by selecting it and clicking the minus-sign button at the bottom. Then recreate the service by clicking the plus-sign button and following the prompts.

    Step 5

    Reset the System Management Controller.

    Step 6

    Reset the PRAM.

    Step 7

    Launch the Keychain Access application. Search for and delete all AirPort network password items that refer to the network. Make a note of the password first.

    Step 8

    Make a "Genius" appointment at an Apple Store, or go to another authorized service center.