video at startup problem

Hello, this may be a stupid question, but I am at a loss what to do. I have received a pc with suse linux 9.2, which boots well. After booting, i expect a login screen. However, I get a message from the monitor: Attention cannot display this video mode change computer display input to 1280x1024@60hz. No screen, nothing. What do I do now? Thanks for any help, Ruud