help! all monitors are blank

[nemo_7708]

I was troubleshooting my projector and found out that its my cable that's y every white is pink,now I click on extend my desktop now no monitor are on ,any idea of how to fix it I have a asus. M4A785-M mother board

[twisted8]

I would try booting in low res mode. Press F8 when the computing is starting and select Enable Low Resolution Video. Try to set you resolutions again. If that doesn't work I would start in safe mode and remove the video drivers and then reinstall them.
good luck!