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Helpful answers
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Jul 1, 2015 2:27 AM in response to GregRobsby thunderzzz,Try these steps:
Restart your Mac with the Shift button pressed.
- Shut down your Mac
- Wait until your computer turns off and after that press the Power button
- Right after you hear the startup tone, press and hold the Shift key
- Release the Shift key when you see a grey Apple sign and the progress bar below this sign
- Once you see Desktop, start a Disk Utility scan to detect and repair file system errors (don't forget to choose your main hard drive)
- Click on Verify Disc and then, if asked to fix problems, on Repair Disk
- After this, click on Verify Disk Permissions and then on Repair Disk Permissions
- After the process is finished, shut down your Mac and turn it back on after about 30 seconds
Apart from that, take a look at this Apple article and follow the instructions on Resetting NVRAM shown there: How to Reset NVRAM on your Mac - Apple Support
Take a look at the steps suggested by Apple in this article:
https://support.apple.com/en-us/HT204267
Hope this helps -
Jul 1, 2015 2:35 AM in response to GregRobsby lllaass,This is the Mac Pro desktop forum. I requested your post be moved to the MacBook Pro laptop forum.
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Jul 1, 2015 3:35 AM in response to GregRobsby OGELTHORPE,Reset the SMC and the NVRAM:
https://support.apple.com/en-us/HT201295
https://support.apple.com/en-us/HT204063
Try it more than once if you have to.
If no success, make an appointment at an apple store genius bar for a FREE evaluation.
Ciao.