Z77 Extreme4 - after updating BIOS no DVI out

Hello all. I Updated the BIOS on a Z77 Extreme4 mainboard today and all went fine.

but on restart there was no signal out on the monitor well not through the DVI- socket anyway but I put the VGA plug into the onboard VGA socket and was getting a picture fine.

The video card is an ASUS PCI Express

I went into BIOS and in the north whatever it was , primary was set to PCI Express (there were 3 options PCI, PCI Express, and Onboard)

The BIOS was P1. (something)
and I Updated it to 2.90 (without the P in front)

any ideas please?
Thanks.

Thanks for posting back that you sorted it