Help Please!! (reboot message on startup)

When exactly does the message appear? Turning your Mac on differs from logging in and I assume you mean, if you log into your user account, you get the Kernel Panic message.


from About "You need to restart your computer" (kernel panic) messages

What specific Mac and Mac OS X version do you have? Do you have an external HDD to which you could copy all your data onto?

"How to maximise your MacRumors troubleshooting experience" created by mad jew in 2006​

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Have you also taken a look at MRoogle, since that question may have been asked several times?

 

Does this message fade the display and tell you to restart your machine in a few different languages?

This is called the Kernal Panic, similar to the Blue Screen of Death on windows and it can be one of the worst errors you can get on your mac!

Now since it only happens on one user account, my theory is you might have some VERY dodgy software opening at login on that other account. Check the login items in the Accounts preference for that user.


Omi

 

This, have you installed anything new on your user account lately? If you have go in through the admin account and get rid of it.