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Jess M.
Jess M., Computer Support Specialist
Category: Software
Satisfied Customers: 555
Experience:  Computer Software Support specialist for more that 10 years
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I restarted my laptop but now the no entry sign appeared,

Customer Question

I restarted my laptop but now the no entry sign appeared
JA: Just to clarify, what's the make and model of your laptop, and what operating system are you running?
Customer: MacBook Pro 2011. The latest system I think
JA: Have you installed any updates recently?
Customer: I think a month or two back
JA: What troubleshooting have you tried?
Customer: I've tried going to the disk utility and then when I press the startup disk to restart everything was okay. And when it restarted, the no entry sign appeared. I put my OS X installation disk and tried to reinstall but there is no disk for me to install into. Also now when I click on startup disk there's only "network disk" with a question mark sign on it
JA: Anything else you want the Mac expert to know before I connect you?
Customer: That's all right now
Submitted: 5 months ago.
Category: Software
Expert:  Isaac Franklin replied 5 months ago.

Hello. My name is***** to JustAnswer. I'm reviewing your question now, and will post back with your reply momentarily.

Expert:  Isaac Franklin replied 5 months ago.
  1. Start or restart your Mac.
  2. Immediately after you hear the startup sound, press and hold the Shift key.
  3. Release the Shift key when you see the Apple logo appear on the screen.

After the Apple logo appears, it might take longer than usual to reach the login screen or your desktop. This is because your Mac performs a directory check of your startup disk as part of safe mode.

If this works enter your password.

Then go click on Apple Menu -->Preferences
• Then go into Accounts
• For your Login account under Login Items
• Remove all login items
• once you have completed that, close the window.

Next place you need to go:
• Click on Macintosh HD icon
• Click on System Folder--> Library
• From Library select and open StartupItems folder.
• Remove all Startup Items to Trash.
• Close windows and reboot up normally.

Let me know the results and we can go from there. Please attempt safe mode a couple of times to be sure.

~Franklin

Customer: replied 5 months ago.
It is still the same. The no entry sign still appears. Holding the shift button didn't get me anywhere. It appeared after I put my password *****
Expert:  Isaac Franklin replied 5 months ago.

Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R.
Turn on your Mac.
Press and hold the Command-Option-P-R keys immediately after you hear the startup sound.
Hold these keys until the computer restarts and you hear the startup sound for a second time.
Release the keys.

If this doesnt work, then try this method:

reset the SMC on Mac notebook computers

First determine whether the battery is removable. Mac notebook computers that have a nonremovable battery include MacBook Pro (Early 2009) and later, all models of MacBook Air, MacBook (Late 2009), and MacBook (Retina, 12-inch, Early 2015).

If the battery is nonremovable

  1. Shut down the Mac.
  2. Plug in the MagSafe or USB-C power adapter to a power source and to your Mac.
  3. Using the built-in keyboard, press Shift-Control-Option on the left side of the keyboard, then press the power button at the same time.
  4. Release all keys, then press the power button again to turn on your Mac

If the battery is removable

  1. Shut down the Mac.
  2. Disconnect the MagSafe power adapter from the Mac.
  3. Remove the battery. (Learn about removing the battery in MacBook and MacBook Pro computers.)
  4. Press and hold the power button for 5 seconds.
  5. Reconnect the battery and MagSafe power adapter.
  6. Press the power button to turn on the Mac.

The LED on MagSafe power adapters might change states or temporarily turn off when you reset the SMC.

Let me know what happens.