linux problems with desktop GUI

im getting this error on my fedora system:

The display server has been shut down about 6 times in the last 90 seconds. It is likely that something bad is going on. Waiting for 2 minutes before trying again on display: 0.


UPDATE:

ok, this is what i did, i went to Start > Settings > Display

then in the hardware tab, i clicked on configured button, the selected:
Generic LCD Display:
LCD Panel 1024x768


so thats when i got this message:

Display settings changed
You need to log out and restart the X server for the changes to take affect.
Configuration was written to /etc/X11/xorg.conf, original configuration saved as /etc/X11/xorg.conf.backup



so if after you have made changes to your display and when you reboot you can't see anything, try login in as single mode and replace the configuration file with the original

# xorg configuration created by pyxf86config

section "serverlayout"
        identifier     "default layout"
        screen      0  "screen0" 0 0
        inputdevice    "keyboard0" "corekeyboard"
endsection

section "inputdevice"
        identifier  "keyboard0"
        driver      "kbd"
        option      "xkbmodel" "pc105"
        option      "xkblayout" "us"
endsection

section "device"
        identifier  "videocard0"
        driver      "vesa"
endsection

section "screen"
        identifier "screen0"
        device     "videocard0"
        defaultdepth     24
        subsection "display"
                viewport   0 0
                depth     24
        endsubsection
endsection