How to: change monitor resolution + frequency without a signal?

[pigy33]

Background: I got my CRT monitor to work w/ my laptop at the resolution 1024 x 768 and 75 Hz since I could see the laptop screen to do it but on my desktop I can't see the computer screen, thus I can't change my resolution and frequency to work w/ the CRT monitor

Question: So, how do I change my monitor resolution and frequency without a signal?

Resources/Failed Fixes:
- Safe Mode (video and no video mode)
- Monitor that works with the desktop (not for gaming)
- Regedit changes (guess I failed at this one 🙁)
- Change resolution and frequency settings w/o screen

Please Help! I really want to use my desktop as it's a lot faster than my laptop, and thanks in advanced!!!

 

[demoth]

Go into your BIOS settings with the working monitor and see if your BIOS software allows any manual entry for 1024 x 768 75 Hz then reboot with the gaming CRT.