Peripheral USB take two tests at work and does not start with Time Machine drive connected

I have a 2015 mid Macbook Pro 15 "work (so I can't afford to take this service for a period of days). My specs are:

I am running the latest version of El Capitan, 10.11.4.

My problem is that USB devices - such as Logitech USB headsets, USB sticks, external hard drives, etc. - always and I always say, require two plugins to be detected by the system. It doesn't work the first time. I always have to connect once, remove it and plug it in again.

In addition, if I try to boot the system with my Time Machine/external USB HD drive, it won't start at all. Only if I reboot without all the devices connected it boot successfully.

My questions are: is it a software or a hardware problem? And someone saw this before? I think it's a hardware problem, although the last notes of patch involve the last update of OS may have addressed a similar issue with audio devices. (This would affect my Logitech USB headset no doubt, but it did not help). If it is a hardware problem that requires a fix of the motherboard, I can't do it, since the new it's a working machine that I can't part with for a long period of time, unless SHE is willing to trade me a machine on-site. It does not affect other most operation every day except that I need to plug devices twice, all the time.

Thank you, everyone.

Try this-

How to reset the NVRAM on your Mac - Apple Support

Reset the management system (SCM) controller on your Mac - Apple Support

Tags: Notebooks

Similar Questions

  • Once I changed my ISP my computer network does not work and does not recognize my router lynsys

    Once I changed my ISP my computer network does not work and does not recognize my router lynsys

    Hi George,.
    Please go to the Microsoft Community Forums.
     
    1. do you get an error message?
    2. do you have the internet connection wired or wireless?
    3. What is the brand and model of the computer?
     
    I suggest to refer to the links and follow the steps in the articles:
     
    Wireless and wired network problems
     
    Resources for the resolution of the problems of modem in Windows XP
     
    How to troubleshoot wireless network connections in Windows XP Service Pack 2
     
    How to reset the Protocol Internet (TCP/IP)
     
    If the problem persists, contact the Internet service provider for assistance.
     
    I hope this helps.
  • NB just by making the effort test and does not start backup

    HP dv7-4177 started having types, wouldn't restart. I tried to test that are inbeded and when I did the stress test he stops and does not restart. I hit the power button and nothing happens. I took the hours of battery sevealr and handed over in but I have nothing seems to help.

    Hello Nutn Spec.  I understand that your notebook is currently unable to boot.

    What kind of questions you know before performing the stress test?  This will help me identify the cause of the problem.

    Have you tried to do a hard reset?  It drains all the residual energy of the laptop and hardware reset forces.  If you haven't tried this before I would suggest trying the following.

    1. Make sure that the laptop is completely turned off.
    2. Remove the battery and AC power.
    3. Press and hold the power button for 15-20 seconds, three times.
    4. Replace the battery and AC power.
    5. Try to start Notepad.

    Let me know the result.  I will keep an eye out for your answer.  Have a great night!

  • Photoshop CS3 does not start with popup indicating that "licensing for this product has stopped working" I tried uninstalling and reinstalling 3 times, including after you run CCCleaner tool.  Any help would be appreciated?

    Photoshop CS3 does not start with popup indicating that "licensing for this product has stopped working" I tried uninstalling and reinstalling 3 times, including after you run CCCleaner tool.  Any help would be appreciated?

    Same fixed.  At executed license repair tool, Adobe - Adobe licensing repair tool, and it fixed the problem.

  • CD player passes all tests but the computer does not start from cd player

    CD player passes all the tests, but the computer does not start from cd drive. entered the bios and it specifically indicate to boot from the cd drive. Windows 7 installation disc does not start. Win 7 disk works in another computer to start. Why is it not this cd player read the disc and from the win 7 installation process?

    I see this problem on systems having older IDE and SATA drives requiring firmware updates and assigned to the region 1 aka they boot from XP CD, but not DVD windows 7or media.

  • Windows Live Mail does not all my emails and does not synchronize with another e-mail account.

    Windows Live Mail does not all my emails and does not synchronize with another e-mail account.

    Hello

    Unfortunately the answers is a site of support of peers supported and has no real influence
    with Windows Live.

    Check with Windows Live Support and Forums

    Windows Live Mail Forums
    http://www.windowslivehelp.com/forums.aspx?ProductID=15

    Windows Live Solutions
    http://www.windowslivehelp.com/solutions.aspx?ProductID=15

    Windows Live Solution Center
    http://www.windowslivehelp.com/

    Compromised account - unauthorized account access
    http://windowslivehelp.com/solution.aspx?SolutionID=6ea0c7b3-1473-4176-b03f-145b951dcb41

    I hope this helps.

    Rob Brown - Microsoft MVP<- profile="" -="" windows="" expert="" -="" consumer="" :="" bicycle=""><- mark="" twain="" said="" it="">

  • My network password box keeps coming back, and does not deal with e-mail.

    network password box problem

    My network password box keeps coming back and does not deal with e-mail, this just started happening, why

    Hello

    ·         What mail client do you use?

    ·         Were there any changes made on the computer before the show?

    ·         Are you making reference to the box to pop up while accessing an e-mail program like Windows mail or Outlook?

    Please provide us with more information about the issue so that we can help you further:

    If you are facing this problem on Outlook, see this link:

    http://Office.Microsoft.com/en-us/Outlook-help/i-get-an-enter-network-password-prompt-HA010151354.aspx

    Alternatively, you can ask the experts in the forums of Outlook:

    http://answers.Microsoft.com/en-us/Office/Forum/Outlook

  • iPhone 7 more - Siri iOS10 not work and does not

    I received my iPhone 7 Plus 3 days ago and tried to set up "Hey Siri". In the process, I noticed that Siri was insensitive and does not work.

    I did some troubleshooting and started with the reset, restore, turned dictation & Siri/off voltage (before and after reboot) and still no response from Siri.

    I proceeded to remove the hardware problem by making a call and speaking directly into the microphone with high and low height during a call. Nobody who assists heard both high and low perfectly. I only tested the microphone with voice memo and the microphone worked fine.

    Called customer service on speaker (which call was working properly) but they were unable to provide a response, rep said she would follow with me Wednesday.

    I press the home button, Siri will appear with the wavelength and as soon as I said a word Siri States "I didn't understand" and rest wavelength normal. I don't know if there is a problem with my phone or iOS10, but if someone has an answer or has the same issue please chime. Thank you!

    iOS 10, when using Siri, you hold DOWN the home button while talking with Siri.  Release the button when you are finished speaking.

    Best,

    GDG

  • USB-6009 DAQmx meter task stops and does not restart when you restart the VI

    I have the task of counter DAQmx which "hangs up" while troubleshooting a VI and does not restart when I restart Traoré.  See attached fragment VI.  The counter works reliably in normal operation, but some combinations of interruption and running "highlighted" causes to stop work.  It's in LabVIEW 2009.

    It will restart if I close the VI and reopen it.  However, this causes losing me my window probe laboriously built with ten

    the probes.

    Is it possible to re - initialize a DAQmx task without closing the VI?

    This significantly slows the troubleshooting.

    As an alternative, if anyone can suggest a way to preserve a probe Watch window after closing of associated VI, it would be a work around.

    Please do not take into account.

    Counteract the work of task - it's the rest of the program which is hung up.

  • Same code in two documents 1 works 1 does not work? Help

    All I want to do is to start and stop the sound embeded who plays like a music video.  There is no video.  Its just.  It works in a single document and it does not work in another.

    I have three layers in the file I want to play the sound.  The layers of Action with the code.  The layers of sound with the sound of embeded that broadcast the images and the button with two buttons named stop_btn and play_btn layer that I got from the window button on the flash itself inside.  That's Flash CS3 and I he published with AS3.  This code works in a document, I got school and does not work in the one I created.

    The buttons are named correctly so what does not work?

    Here is the code:

    play_btn.addEventListener (MouseEvent.CLICK, regarderMovie);
    stop_btn.addEventListener (MouseEvent.CLICK, stopMovie);


    function stopMovie(event:MouseEvent):void
    {
    Stop();
    }
    function playMovie(event:MouseEvent):void
    {
    Play();
    }

    Click on the frame at the beginning of your sound and in the properties panel, change your sound for his event to a flow.

  • T420 does not start with 2 x 4 GB of RAM (two identical RAM)

    Hi all

    I have a weird problem that I hope you will be able to help me with.
    My T420 came with 1x4Go of ram (below the keyboard) and I wanted to switch to 2 x 4 GB of RAM so even once, I bought exactly the same RAM.

    The two Rams work well by themselves, in the Bay under the keyboard as well as in the Bay under the laptop. The two RAM been tested individually the two RAM slots. The laptop works very well with either the RAM individually in one of the RAM slots.

    BUT if I put them both at the same time, the T420 does not start. It turns on (screen remains black) and instantly switches back off. Without pushing any button, the T420 will then turn itself back on about 3-5 seconds later. This process repeats indefinitely. I don't even see the ThinkPad security screen where you can access BIOS. I changed the RAM autour in slots, but this does not solve the problem either.

    I never had something like this before. Does anyone have an idea on how to fix this?

    Thank you much in advance.

    Concerning
    Lippasti


  • ESX 3.5 does not start with two intel cpu on an ibm HS21 blade 5420

    I have 4 ibm HS21 blades that I bought recently and ESX 3.5 does not start on them if I have both CPU intel 5420 installed. It will start if I remove one of the CPU. This also occurs if I try ESXi.

    I have two blades I bought 8 months ago that work well with both CPU is installed. Blade models are very similar, "old" is hs21-8853a1c new knives is hs21-8853g3u.

    I have updated the bios and the controllers. At this point, I shot two blades of the additional processor so that I can use them but I would really like to put back them.

    Any thoughts?

    David,

    Welcome to the forums!

    Could check you if two microprocessors are executing a different step? If so, then the debate may be relevant here .

    Sanjana-

  • Firefox worked, today has not started with the error the version of this file is not compatible with the version of windows you are using.

    Computer is Windows 7 Ultimate 64 bit. Firefox has work fine for over a year on this computer. Nothing has been changed or updated updated except Windows update indicates that it installed updates on August 19. I had computer week before because only out of town, back entrance and began August 18, but Firefox has worked that day. Does not use FF again until today. Today August 22, firefox does not start, shortcut icon changed program not there. Exe in the folder when you click Poster error message says the version of this file is not compatible with the version of Windows, I am running. Exe of Firefox shows created on 20 August. I suspect the update, Windows or FF but lean towards windows, which was spent, who broke things. I noticed that IE 10 updates, updates of .NET framework and the malicious software removal tool have been installed. I tried to restart the computer, has not set. Tried to run as administrator, did not work. I don't want to uninstall FF, at least have to because of all the things I have here, bookmarks, last past passwords, etc..

    Hello

    Some Firefox problems can be solved by performing a clean reinstall. This means that you remove Firefox program files (not the profile folder, where the bookmarks are stored) and then reinstall Firefox. Please follow these steps:

    Note: You can print these steps or consult them in another browser.

    1. Download the latest version of Firefox from http://www.mozilla.org office and save the installer to your computer.
    2. Once the download is complete, close all Firefox Windows (click on quit in the file menu or Firefox).
    3. Remove the Firefox installation folder, which is located in one of these locations, by default:
      • Windows:

        • C:\Program Files\Mozilla Firefox
        • C:\Program Files (x 86) \Mozilla Firefox
      • Mac: Delete Firefox in the Applications folder.
      • Linux: If you have installed Firefox with the distribution-based package manager, you must use the same way to uninstall: see Install Firefox on Linux. If you have downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory.
    4. Now, go ahead and reinstall Firefox:
      1. Double-click on the downloaded Setup file and go through the steps in the installation wizard.
      2. Once the wizard is completed, click to open Firefox directly after clicking the Finish button.

    Please report back to see if this helped you!

    Thank you.

  • Satellite A30 does not start with the USB device connected at boot time

    Hello

    I have a Satellite A30 and sometimes it does not start.
    After turning on, not even the BIOS starts.
    even if sometimes the BIOS starts, but the OS does not load.

    I figured out that its related to USB devices connected at boot time.
    If no USB devices are connected, it starts without a problem.
    Even if the start-up is suspended, as soon as you unplug start it BIOS USB devices.
    Its ok to connect USB devices later, once the system has started.
    I disabled "removable devices boot" and "network startup."
    just in case, but it makes no difference.

    BIOS is version the most recent (1.70) and it comes up with all kinds of USB devices.
    printer, mouse and (self-powered) external USB hard disk.

    Is this a known issue?
    There is no known workaround solution?

    Hello

    I put t know why this happens, but it has to do with the BIOS.
    The same thing happened on my old laptop. I couldn't start my unit while the USB printer has been turned on and connected.
    The only solution is to disconnect the external USB device during the boot process.

    RSY you should check if the order of boot in the BIOS has been on the HARD drive first.

  • 6735 b hangs and does not start on battery

    My 6735 b does not start on battery. Just hangs until I plug in the power supply. For some odd reason, I can't access the drivers even though I have the laptop regestered? Can someone post a link to the update of the bios for me?

    Glenn,

    The server is maybe out of service.  I reported the problem with the web page.  Yours is not the only page not available at the moment - something's up.

    Hang in there and try again later.

    Just for the record, in the case where it is useful:

    Test and calibrate the battery (Windows 8)

    Test and calibrate the battery (Windows 7)

Maybe you are looking for

  • Crysis freezes Satellite A200 1AH on dx10.

    I have the satellite A200-1Ah... Vista Ultimate version. GPU is Ati Mobility Radeon HD2600. Crysis freezes every 3-5 minutes. Tried all the new drivers, patches etc... If I play Crysis dx9 mode by the shortcut without problem... Waiting for your help

  • Satellite A100-590 does not start anymoore

    Helloof course, I deleted some system files and my satellite will not start, if I use the secure mode, the system starts but the Black Guard Office and the cursor flashes in the upper left corner.Also, I disconnected the battery, not distributed with

  • Free space suite iPhoto to move Photos

    When I was invited to migrate my iPhoto library pictures, I didn't know I'd end up with double consumed disk space. My Macbook Pro (mid-2012 retina) has a 512 GB HDD and my original library resumed ca 227GB, so woops, almost all of the capacity has b

  • Classification error. The class begins is greater at the end of the class.

    Hello I am looking for a solution to an error that doesn't make much sense to me: Error in (online: 75, column: 3): Classification error. The class begins is greater at the end of the class. It seems that when I call the VBS attached on the PDM also

  • Winsdows Update Error 80070020 updates yesterday against MS

    This happens only with 975560 KB that is related to MS10-013 and claims to be a critical update.All other updates are correctly loaded.There is no error message - just the fact stated that this update failed to install after reboot. - because it coul