Hi, i have a yellow haze on my video output, i have tried different monitors with the same result. Any ideas

Cheers

More information on your PC would be useful? If you've tried a different monitor try a known good video card. If you have onboard video you may have to adjust Bios for this to work. Post back if you have problems, a lot depends on the type of mobo you have.

Wiggle the data cable where it plugs into the video card, if the color goes back to normal you have faulty contacts. Remove and replace the plug a few times to try and clean up the contact pins. Some spray contact cleaner might help that too.

If the dirty contacts are on the video card end, it would probably happen on two monitors, but this could be video card video memory too, I think it might be a good idea to completely remove the video card from Device Manager, preferably in Safe Mode, and reinstall it after a reboot.

The advice korky45 posted above is the first thing to try, different monitor.