My iMac OS X wont load

When I turn on my iMac desktop it blinks a gray globe for serval seconds and then goes to the apple icon. Under the apple icon a loading circle spins maybe once or twice, then my screen goes gray and says you may need to restart your computer by holding the power button or using the restart button. I do as it says then it happens again. I have tried having nothing connected it speeds up the process but never changes the outcome. This may be under the wrong thread but im not sure. And my modle is a iMac 20" I dont know what version, it has no leopard or anything. Only things that i have done to my iMac were change out the ram. Also just download updates not much else.

Hi
Normally, a globe at startup suggests the computer is trying to start from a Network Server, does starting up with the Option/Alt key held down give you the option of selecting your Mac OS partition? IF it does, select it & continue. If you get into Leopard, got to System Preferences>Startup Disk & reselect Mac OS partition.
Steve
Also have a look at http://www.thexlab.com/faqs/kernelpanics.html
Message was edited by: SteveLamb0

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