Boot problem, No Video

[FuziOK]

Paul Humanic wrote:
> Hi, I just installed Fedora Core 6 on my computer, and when I went to boot
> it for the first time, it started to boot, but then the screen went blank
> and my monitor flashed a box that said "outside video frequencies".  It
> doesn't do anything after that.  I'm running on a very new computer
> (PowerSpec 512mb 3Ghz Intel) and a CRT monitor (Korean data systems).  My
> video card is a Via/sg3 UniChrome Pro IGP.  I saw a previous post recently
> of someone seeming to have the same problem.  I was able to boot into text
> mode after changing the boot options, and I tried "telinit 5" which failed,
> and the video driver was already set to "vesa".  Thanks in advance for any
> ideas that you may have.

I think the values of HorizSync and VertRefresh in Section "Monitor" of your 
xorg.conf were not set correctly. Try to edit /etc/X11/xorg.conf to change 
the values manually. 
Good luck.