Need help with MSI board

[EJcomputer]

Hello,
I have installed an MSI R6950-2PM2DGDS PCIe graphics board in my Asus CG1330 computer. It seemed to be working o until a Windows Update changed something. Now when I boot and Windows starts there signal to the HD monitor just disconnects. The wierdest thing is that it will work again when I connect a VGA cable to another monitor. The display that lights up is the HD display connected to the MSI card, not the VGA. Any ideas?

I have changed the boot priority to PCI-GFXO-GPP-IGFX
I tried to disable the ATI Radeon 3000 Graphics driver and leave the 6950 running but then i get no signal again.

 

[purple stain]

Try downloading and re-installing the 6950 drivers.

 

[EJcomputer]

unfortunately I did that already

 

[purple stain]

Try restoring the system to a point before the update.