Why does my iMac suddenly restart?
I can no longer use my iMac EMC 2111. It locks up after couple of minutes. When restarting it, with holding start button..., it wount come back. The hdd spins, dvd spins and fans spins, but no picture. If I let it take a breake for an hour or so it will boot, but maybe hang in start up with grey background and Apple icon. If I let it stay over the night and restart it, it starts normally and I can use it for a minute or two, then hang or shuts down (tries to restart, but cannot)
This is a link to a picture of an error message:
Any suggestions of how to troubleshoot this one. Also get a message that I must hold the restart button until shut down to restart it. But as told I cant boot again.
Please help in any way, I have no hair left!! ;)
Thank You in advance