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Cannot boot with 7950 set as primary device

supra21

supra21

supra21

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Joined
24 Aug 2007
Posts
231
Hi I have recently purchased a Asus 7950 DCUII Top graphics card. It was all working fine until yesterday morning when i tried to wake my pc from stand-by and nothing came up on screen. After a reboot it kept hanging just after the windows logo disappears; all i get is a black box.
So after trying various windows repair options I just re-installed windows 8 so I had a clean slate. Still just hangs, only a black box.....

I found that if i plugged my display port cable into the mobo (asus z77) and set the iGPU to be the the primary display device everything worked fine.
When back on the desktop I re-installed latest stable ati ccc drivers which installed fine (except the screen flicked for about 10-15 seconds).

I loaded up the game "Hard Reset" to see if my 7950 was working but as i had set the iGPU to be the primary display device it was not utilising the 7950.

Now the strange part, I also have a panasonic plasma connected to the 7950 which after installing drivers shows the extended desktop if i turn off my monitor the plasma becomes the primary display (which is connected to the 7950). When i loaded Hard Reset on this display the game was playing perfectly using the 7950........what is going on?

From what i can tell the card works but when setting it as the primary display device windows just will not boot? Is my 7950 faulty?

Any help would be appreciated!
 
Safe mode did work; but even when i re-installed windows and re-installed stable drivers does not work. Also I have tried using a dvi cable instead but it does the same thing. I haven't tried turning my monitor off then back on at the black boot screen.
 
Last edited:
So this seems to be down to windows 8? I also restored all stock clocks on my cpu (i7-3770K) and the 7950 also. Firstly I thought it was something to do with my ssd's (I have 2 Crucial M4's in Raid 0) so I flashed the latest firmware; which has windows 8 compatibility improvements but still no difference.
Its so weird that it was all working fine and then randomly generated this issue. I may go back to windows 7 again to see if that resolves the issue but windows 8 has grown on me and I cannot be bothered to re-install os/programs all over again!
 
To get around this I have set the igpu as the primary display adaptor in the bios. This is connected via DisplayPort to my monitor. I have also connected a DVI cable to my monitor from my 7950.
I have configured my DVI connection to be "My Main Display" using windows settings, and have disabled the DisplayPort display.(so the desktop does not extend) This allows me to boot into windows and use the 7950 as the primary vga adpator. However if I need to see the post or get into the bios i need to switch to the DisplayPort input.
 
I just thought I would report that after updating my bios to the latest version this issue has been resolved!

(ASUS P8Z77-V DELUXE: Updated from 1709 to 1908)
 
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