My internet keeps disconnecting

Question

EtreCheck version: 2.1.8 (121)Report generated April 4, 2015 at 5:39:52 PM EDTDownload EtreCheck from http://etresoft.com/etrecheckClick the [Click for support] links for help with non-Apple products.Click the [Click for details] links for more information about that line.Hardware Information: ℹ️    MacBook Pro (13-inch, Late 2011) (Technical Specifications)    MacBook Pro - model: MacBookPro8,1    1 2.4 GHz Intel Core i5 CPU: 2-core    4 GB RAM Upgradeable        BANK 0/DIMM0            2 GB DDR3 1333 MHz ok        BANK 1/DIMM0            2 GB DDR3 1333 MHz ok    Bluetooth: Old - Handoff/Airdrop2 not supported    Wireless:  en1: 802.11 a/b/g/n    Battery Health: Normal - Cycle count 323Video Information: ℹ️    Intel HD Graphics 3000 - VRAM: 384 MB        Color LCD 1280 x 800System Software: ℹ️    OS X 10.10.2 (14C1514) - Time since boot: 5:59:32Disk Information: ℹ️    TOSHIBA MK5065GSXF disk0 : (500.11 GB)        EFI (disk0s1) &lt;not mounted&gt; : 210 MB         Recovery HD (disk0s3) &lt;not mounted&gt;  [Recovery]: 650 MB         Macintosh HD (disk1) / : 498.88 GB (476.81 GB free)            Encrypted AES-XTS Unlocked            Core Storage: disk0s2 499.25 GB Online    OPTIARC DVD RW AD-5970H  USB Information: ℹ️    Apple Inc. BRCM2070 Hub         Apple Inc. Bluetooth USB Host Controller     Apple Inc. Apple Internal Keyboard / Trackpad     Apple Computer, Inc. IR Receiver Thunderbolt Information: ℹ️    Apple Inc. thunderbolt_busGatekeeper: ℹ️    AnywhereLaunch Agents: ℹ️    [loaded]    com.oracle.java.Java-Updater.plist [Click for support]Launch Daemons: ℹ️    [loaded]    com.adobe.fpsaud.plist [Click for support]    [loaded]    com.oracle.java.Helper-Tool.plist [Click for support]User Launch Agents: ℹ️    [loaded]    com.adobe.ARM.[...].plist [Click for support]    [loaded]    com.google.keystone.agent.plist [Click for support]User Login Items: ℹ️    AdobeResourceSynchronizer    Application Hidden (/Applications/Adobe Reader.app/Contents/Support/AdobeResourceSynchronizer.app)Internet Plug-ins: ℹ️    FlashPlayer-10.6: Version: 17.0.0.134 - SDK 10.6 [Click for support]    Default Browser: Version: 600 - SDK 10.10    AdobePDFViewerNPAPI: Version: 11.0.10 - SDK 10.6 [Click for support]    AdobePDFViewer: Version: 11.0.10 - SDK 10.6 [Click for support]    Flash Player: Version: 17.0.0.134 - SDK 10.6 [Click for support]    QuickTime Plugin: Version: 7.7.3    OfficeLiveBrowserPlugin: Version: 12.3.6 [Click for support]    Silverlight: Version: 5.1.30514.0 - SDK 10.6 [Click for support]    JavaAppletPlugin: Version: Java 8 Update 40 Check version3rd Party Preference Panes: ℹ️    Flash Player  [Click for support]    Java  [Click for support]Time Machine: ℹ️    Time Machine not configured!Top Processes by CPU: ℹ️        45%    Mail         6%    WindowServer         2%    fontd         2%    airportd         1%    discoverydTop Processes by Memory: ℹ️    125 MB    Image Capture Extension    125 MB    Finder    123 MB    Mail    94 MB    com.apple.WebKit.WebContent    86 MB    SafariVirtual Memory Information: ℹ️    41 MB    Free RAM    1.64 GB    Active RAM    1.61 GB    Inactive RAM    992 MB    Wired RAM    2.66 GB    Page-ins    61 MB    Page-outsDiagnostics Information: ℹ️    Apr 4, 2015, 11:39:04 AM    Self test - passed    Apr 4, 2015, 09:24:52 AM    /Library/Logs/DiagnosticReports/System Preferences_2015-04-04-092452_[redacted].hang    Apr 4, 2015, 06:19:24 AM    /Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2015-04-04-061924_[ redacted].cpu_resource.diag [Click for details]    Apr 2, 2015, 10:36:28 PM    /Library/Logs/DiagnosticReports/System Preferences_2015-04-02-223628_[redacted].hang

Linc Davis · Accepted Answer

Please test after taking each of the following steps that you haven&#x27;t already tried. Stop when the problem is resolved. Back up all data before making any changes.Step 1Take 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&#x27;t post the contents here.Be sure to test on more than one Wi-Fi network, if at all possible. A desktop computer can be tested with a mobile hotspot, such as the hotspot created by a cell phone. If the problem only exists on one network, then the access point of that network should be the focus of your attention, not the computer.Step 2Disconnect all USB 3 devices. If you don&#x27;t know which are USB 3, disconnect all USB devices except keyboard and mouse.Step 3If you&#x27;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&#x27;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 4Open the Energy Saver pane in System Preferences and unlock the settings, if necessary. Select the Power Adapter  tab, if there is one. Uncheck the box marked          Wake for Wi-Fi network accessif it&#x27;s checked.Step 5Open 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 6In the Wi-Fi settings, select          Advanced... ▹ TCP/IP ▹ Configure IPv6: Link-local onlyClick OK and then Apply.Step 7Reset the System Management Controller.Step 8Reset the PRAM.Step 9Launch 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. Turn Wi-Fi off and then back on. You&#x27;ll be prompted for the password when you reconnect. Save it in the keychain.Step 10Make a "Genius" appointment at an Apple Store, or go to another authorized service center.