PC doesn't boot after firmware update

[JohnnyBigodes]

Hello guys,

I need help.

I have a Gigabyte Windforce GTX 670 2GB and wanted to upgrade my firmware from F4 to F5 under windows 8.
 Everything was great until the flashing tool wanted a reboot.

Now my pc doesn't start at all. I see the boot screen and after that nothing happens.

I cannot even enter bios. After that the screens goes black but there is still a blinking line.

Nothing more. What can I do to fix it?

I have an Asus P67 Mainboard.

Thanks in advance

Greets
JohnnyBigodes

[JohnnyBigodes]

I found out that i cant run my Motherboard in UEFI mode.

I wont boot anymore if my GPU has Firmware F5 and my Asus P8P67 Rev3.0 is in UEFI mode.

Great Firmware update ;o(

[JohnnyBigodes]

It is great to be on the Official Gigabyte Forum and they dont give a f*** on giving me an answer at all.

This is what i mean with great Support... NOT ;o(

[JohnnyBigodes]

It is a shame that this is an Oficial Forum and i dont get any response.

Shame on you Gigabyte.

Never ever a Gigabyte product again.

Thanks for nothing