Updated to the newest IOS yesterday, now my iMac won't load up.

Finally got around to updating to the newest OS yesterday.  Rebooted yesterday to complete installation and computer worked fine.  This morning, when I boot up,it only gets to the grey screen with the apple and stays there.  HELP....this is a busines computer.  I can't even get it into safe mode.

Try this:
Unplug all peripherals (external drives, printers, hubs) and network cables.
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

Similar Messages

Maybe you are looking for

  • Forté Icon in the Window Title Bar.

    Hi, I would like to know if it is possible to change the Forté little Icon in all windows of our application for our company logo. Example: <<...OLE_Obj...>> <<Forte.zip>> Thank. Allen Vachon INFLUATEC Inc. Programmer Analyst (819)/(888) 595-1794 ava

  • How to make smart album from path photos

    Hi everyone! This maybe noob question. So I'm trying to make smart album for all of my Path's photos stored in my iPhoto library, but I find it difficult to determine proper filter. I have tried to make smart album from instagram's, with this: Any Te

  • Problem with reset button

    Hello All, I have a form which has several fields. There is a reset button at the top of the Page -1 of the form which should clear/rest  the form. But I have several checkboxes, out of which if some clicked few text fields / drop downs associated wi

  • Advanced Video FX for Webcam instant!!

    I got a Webcam instant, but no Advanced Video FX, or at least I see no place to download it from. Can someone help?

  • Jdev 9.0.5.1 with jdk 1.5.0_06

    I developed a project with jdev 9.0.5 with its default jdk 1.4.2_08. Then I installed jdk1.5.0_06 on the system. Then I defined jdk1.5 to the project in the jdeveloper, I used ojvminstall.bat. When I "make" the project I get, "Error: initialization e