[newbie] screenflash

[C. Sweeney]

Hello, have just installed Mandrake 6.1, and need help with a flashing screen. The X program is automatic, but there is only text on screen immediately following the login page with Penguin graphic. The page continually flashes, seems the monitor/video settings are wrong, so need to reconfigure. This is not possible as the screen is not stable, continually going on and off, so need to make the screen stable again to reconfigure. Is there any solution that does not involve reinstall? Is there any solution? HELP!