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Macbook pro stuck at boot screen with apple logo and 100 percent progress bar.

Some keys i.e 4RFV not working on my macbook pro keybaord and sometimes the keys get pressed automatically. While the laptop was working fine with onscreen keyboard, yesterday after turning it off, it is now stuck at boot screen with apple logo and 100 percent progress bar. Even while restarting, it shows only 100 percent progress bar within 2-3 seconds of turning on and is stuck there.


I cannot start recovery as R is not working.. I have made a bootable el capitan usb to reinstall the operating system but even after pressing option, it is not going to the disk utility screen.


I tried taking the hard disk cable out connected to logic board and then starting the laptop with bootable usb plugged in and option key pressed, it still shows apple logo with 100 percent progress bar.. confusing...

If i donot press any key and turn it on with bootable usb plugged in, again it shows apple logo and gives some error message for a second and restarts again.. below is the screen shot.. Please help!!

User uploaded file

Posted on Aug 31, 2017 11:09 AM

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Posted on Aug 31, 2017 11:42 AM

Please try the following, in order. Stop at the step where the issue is resolved:

  1. Reset your Mac's SMC.
    • Reset the System Management Controller (SMC) on your Mac - Apple Support
    • Fans, keyboard backlight, status indicator, battery indicator, display backlight, power button, close/open the lid, sleep or shut down, battery doesn't charge, MagSafe indicator light incorrect status.
    • Hold down the <shift><control><option> keys, and then, press the power button. Hold all of them for, at least, 10 seconds.
  2. Reset your Mac's NVRAM.
    • How to reset NVRAM on your Mac - Apple Support
    • Resets sound volume, display resolution, startup-disk selection, time zone, & kernel panic information.
    • <option><command><P><R>
  3. Boot up your Mac in Safe Mode.
  4. Boot up your Mac in Recovery or Internet Recovery Mode.
    • About macOS Recovery - Apple Support
    • When at the initial Recovery Mode screen, select the Disk Utility option.
    • Run Disk Utility > First Aid to verify the startup disk's integrity.
  5. Boot up your Mac in Single-User Mode.
    • How to start up your Mac in single-user or verbose mode - Apple Support
    • At the command prompt, type: /sbin/fsck -fy <return>

      If fsck makes any repairs, you will get a message that says: Files System was modified. If you do, run fsck again until the "The volume <volumename> appears to be OK."

    • Type reboot at the prompt to exit Single-User Mode.
  6. Run either Apple Hardware Test (AHT) (pre-2013 Macs) or Apple Diagnostics (2013+ Macs) to uncover any hardware issues with your Mac.
  7. Make a Genius Bar appointment at your local Apple Store.
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Macbook pro stuck at boot screen with apple logo and 100 percent progress bar.

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