"Out of Range"?

Everytime I start up my computer the monitor resonds with a message saying "out of range". I have tried to reboot it many times in normal mode, but it just wont work. I know that the problem has something to do with the screen resolution, but I dont know how to fix it with out a working screen. I have tried to go into safe mode and change it, but it doesnt seem to work. I am kind of desprete to fix this, so any help is greatly appreciated.

By the way, if it helps, my operating system is windows vista.