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Apr 1, 2016 1:27 PM in response to Leo 30by theratter,Try these in order testing your system after each to see if it's back to normal:
- Resetting your Mac's PRAM and NVRAM
- Intel-based Macs: Resetting the System Management Controller (SMC)
- Restart the computer in Safe Mode, then restart again, normally. If this doesn't help, then:
- Restart the computer and after the chime hold down the COMMAND and R keys until the Utility Menu appears.
- Select Disk Utility from the Utility Menu.
- After Disk Utility loads select the hard drive entry (mfgr.'s ID and drive size) from the side list. In the Disk Utility status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (S.M.A.R.T status is not reported for external drives.) If the drive is "Verified" then select the indented (usually, Macintosh HD) volume from the list. Click on the First Aid tab, then click on the Repair Disk button. When it finishes click on the Repair Permissions button. When that has completed quit Disk Utility and return to the Utility Menu. Select Restart from the Apple menu.
- Download and install the OS X Yosemite 10.10.5 Combo Update.
- Reboot from the Recovery HD. Select Reinstall OS X from the Utility Menu and click on the Continue button. Reinstall the 10.10.5 update, OS X Yosemite 10.10.5 Combo Update, if required.
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Apr 1, 2016 2:23 PM in response to Leo 30by Linc Davis,These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.
Please launch the Console application in any one of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad and start typing the name.
In the Console window, select
DIAGNOSTIC AND USAGE INFORMATION ▹ System Diagnostic Reports
(not Diagnostic and Usage Messages) from the log list on the left. If you don't see that list, select
View ▹ Show Log List
from the menu bar.
There is a disclosure triangle to the left of the list item. If the triangle is pointing to the right, click it so that it points down. You'll see a list of reports. A panic report has a name that begins with "Kernel" and ends in ".panic". Select the most recent one. The contents of the report will appear on the right. Use copy and paste to post the entire contents—the text, not a screenshot.
If you don't see any reports listed, but you know there was a panic, you may have chosen Diagnostic and Usage Messages from the log list. Choose DIAGNOSTIC AND USAGE INFORMATION instead.
In the interest of privacy, I suggest that, before posting, you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if it’s present (it may not be.)
Please don’t post other kinds of diagnostic report.
I know the report is long, maybe several hundred lines. Please post all of it anyway.
When you post the report, you might see an error message on the web page: "You have included content in your post that is not permitted," or "The message contains invalid characters." That's a bug in the forum software. Please post the text on Pastebin, then post a link here to the page you created.
If you have an account on Pastebin, please don't select Private from the Paste Exposure menu on the page, because then no one but you will be able to see it.
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Apr 1, 2016 4:39 PM in response to Linc Davisby OGELTHORPE,Download and post an Etrecheck report:
http://www.etresoft.com/etrecheck
Check to see if the MBA had a kernel panic use these instructions to log and post it:
https://support.apple.com/en-us/HT201753
Ciao.