How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Ashik Your Own Question

Ashik, Mac Technician
Category: Mac
Satisfied Customers: 9771
Experience:  Bachelor of Computer Application (BCA), 9+ Years of Experience in troubleshooting Macs, iPhone, iPad, iPod etc
Type Your Mac Question Here...
Ashik is online now
A new question is answered every 9 seconds

When I tried to access my Mac Book Air I got a no entry sign

Customer Question

Hi Pearl when I tried to access my Mac Book Air I got a no entry sign at start up
JA: Just to clarify, how old is your MacBook Air and what operating system are you running?
Customer: 2013
JA: What troubleshooting have you tried?
Customer: I'm not exaxtly sure which OS
JA: The Mac expert can solve this for you. Anything else you want him to know before I connect you two?
Customer: Nothong yet
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Mac Technician about your situation and then connect you two.
Submitted: 3 months ago.
Category: Mac
Expert:  Ashik replied 3 months ago.

This usually happens if the system files are corrupted or if there is any issue with the hard drive. It could be the hard drive that is failing. First try this. Hold down the Power button of your Mac for 5-10 seconds and this will turn it off. Turn it back on and immediately hold down Option key for 20 seconds. From the resulting screen, select Macintosh HD and press return.

If that didn't work, we can run Disk Utility and see if it works or not. Turn off your Mac by holding down Power button for 10 seconds. Then turn it back on and immediately hold down Command and R keys at same time for 20 seconds and this will boot your Mac to the Mac OS X Utilities screen. From there, click Disk Utility. Select your hard disk at left column (Macintosh HD or hard disk name). Then click Verify Disk (under First Aid). If asked to repair, click Repair Disk. Then click Repair Permission.

If you are using latest Mac OS X El Capitan, then you will not see Repair Disk option in Disk Utility. Instead click First Aid button and run it. Repair if asked.

Then restart from Apple menu. If that didn't work, then turn it off. Turn it back on and immediately hold down Command, Option, P and R keys at the same time for 5 seconds, then release the keys and immediately hold down Shift key for 20 seconds. Does it boot into desktop ?

Please let me know if that didn't work, so we can continue troubleshooting.