TS1587 I have a gray screen during start up and  asked to start again

I cannot start up my iMac. A message popped up and asked me to restart again.

I don't know what model of iMac or what version of the OS you have
It would be helpful information for any one who wants to help you.
Is this what you are seeing?
If it is, what you are seeing is called a Kernel Panic.
Did you add Ram recently? Bad RAM can cause these.
-First thing to try, is Zap the PRAM Resetting your Mac's PRAM and NVRAM
-Try starting in safe mode to see if it will start up.
If it does, then restart normally and see if the problem is still present.
-You can also run disk utility to verify and repair your hard drive if needed.
If you have any original installation disks that came with your iMac, try starting from it by inserting the disk and holding C at startup until you see the Apple on screen.
Once it as started up from the disk, open disk utility from the menu bar at the top of your screen and run it..
-If you have a recent and complete backup, you could also try erasing the disk and reinstalling your system and then restoring from your backup.
See here for some troubleshooting help.
http://docs.info.apple.com/article.html?path=Mac/10.7/en/mchlp2890.html
If nothing works:
If you are still in the first 90 days since buying your iMac, you can call Apple for some support over the phone.
You will get a case number that you can use when you call back  in case the problem is more complex and your machine needs repair.
If you are out of the 90 days period, but still in the one year warranty period, take the iMac to an AASP for repair.

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    All I get is gray screen in start up

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  • Gray screen at start up?  For 10 minutes

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    zaza2009 wrote:
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