My Mac has a dark curtain that slowly goes down the screen and then asks for a shut down of the computer. What is happening? What do I do?

I am having a problem with my Mac Pro spontaniously having a darkened curtain that slowly goes from top to bottom of the screen and then in a message box asks me to shut the computer down. There is no warning. I cannot go on with my work as it seems to freeze whatever I am doing. I do no lose the work I am doing, usually, but it is hard and annoying while working. Any helps? I have taken off most apps and fonts that I have installed secondarily. What can cause this and what do I do?

Launch the Console application in any 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. Click Utilities, then Console in the page that opens.
Select the most recent panic log under System Diagnostic Reports. Post the contents — the text, please, not a screenshot. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header and body of the report, if it’s present (it may not be.) Please don't post shutdownStall, spin, or hang reports.

Similar Messages

Maybe you are looking for

  • Change password page in 11,5,10

    Need to know how to add some text to the Change password page in 11,5,10

  • Mini not recognizing monitor

    I have a late 2009 Core 2 Duo/2.53GHz Mac Mini. My old 24-inch LCD monitor was having problems so I had to send it for repairs. I have a 22-inch Samsung and 17-inch Samsung that I have tried connecting to the Mini and both come-up blank upon booting.

  • I updated I tunes and my iPhone as well, I lost my ring tones, how can a have them back?

    I updated my iPhone in a computer at home. But I have my phone synchronized with a computer at the office wich I can't download the last version of iTunes. The thing is that the computer back at the office does not recognize anymore the iPhone coz it

  • Credit balance $21.82 pending for a month

    Verizon Account Number -  {edited for privacy} I cancelled my  verizon FIOS account in early October and returned my equipment. I have a credit balance of $21.82 on my december statement and would like to get that refunded to my credit card account o

  • I am unable to Complete/Update Adobe ID profile

    I recently upgraded to CC. I keep getting prompted to Complete/Update Adobe ID profile A web page gets launched which asks for my address. When I press submit it says Your entry does not match standard addresses in our verification listings. You can