I am fairly new to Linux.

I recently built a machine for a friend and installed Fedora 5 on it (along with Windows XP Pro - dual-boot system.) The monitor I used when building and installing the system, was a Samsung LCD 710N. When my friend took the machine home, he switched to his monitor - I am waiting for him to return my call as to exactly what kind of monitor he has, but I believe it is a 17-inch CRT. The new system booted up just fine and the KDE gui came up fine when I was using my monitor. My friend says that when he boots into Fedora he gets a blank screen. But booting into Windows works fine.

I am guessing his monitor does not support whatever resolution was configured when it was using my monitor. How do I boot to a command prompt and then what do I need to do to get his monitor set up. I guess I probably need to edit a configuration file, but which one and how do I do that at the command line?

Thanks for any help guys.

You may have good success booting into run-level 1 or 3
Do that at the boot menu by highlighting the Fedora menu selection and typing e and press enter
Then, go the the line which has a bunch of kernel stuff on it like this or similar ...
kernel /boot/vmlinuz ro root=/dev/sda1

Then, type e again and press enter
Then, space over one and type 1 then, press enter . It would look like this ...
kernel /boot/vmlinuz ro root=/dev/sda1 1

Then, type b to boot up into run-level 1
#Note: that gets you logged in as root user

Now, run the display configuration tool with the command:
system-config-display

That should allow you to select the correct monitor settings.
After you are done, type: reboot

Thank you very much Homey. I will try that as soon as I get to my friend's place.