To those who state that the issue is a no brainer let me explain a few things.
Gigabyte P965-DQ6 - card will post when reverting back to bios version F10 current bios version being F12j but wait, DVI output to one screen only during startup, then and only then can you connect DVI second screen. Updating Boards bios afterwards will stop card posting. Whilst using VISTA 64 . Using Xp 32 bit F10 bios is fine for normal boot with both DVI's connected. Upgrading to bios 11 or 12 will post one screen only.
Gigabyte P965-S3 - card will not post with any bios version if monitor is plugged in, only after boot up can you connect monitor (DVI)
Gigabyte P965-DS3 - Will post and install fine
Gigabyte P35 - DQ6 - same issue as P-965-DQ6
Cards used Leadtek 9600 GT 512MB
Gigabyte 9600 GT 512MB
NVIDIA GeForce 9600 GT
Power supplys coolermaster 650W and 850W
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Response from GIGABYTE as follows.
We thank you for bringing this issue to our attention. We currently have no solution at this stage
but our technical department feels the issue may be associated with the Marvel Yukon lan bios update.
Currently the issue is with some boards and certain G94 based cards.
We do ask you update your drivers too 175.16 beta as there are numerous fixes which may resolve
many of your errors while we check backward compliance issues you refer too.
Tsa - GA
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Response from leadtek
Thank you for your inquiry
Here is a solution we recommend you could try in tests:
Try to remove all PCI devices from your PC but keep only VGA card (If you got PCI cards set on your motherboard...). Just test our video card only on your PC for comparison. If the video card could work correctly in the PC without other PCI devices, there might be a conflict related to IRQ issue. You can then try to set the PCI cards back one by one to find the conflict one. Moving PCI card to different PCI slot may able to avoid the conflict issue when you met the loop of hardware conflict appeared on a PC. We recommend you can do same tests as above mention to disable the all onboard features on MB for doing the PC boot tests for comparison.
@ Also you can try to test it on the other PCs to make sure whether the video board got any hardware faulty or not. If you still got the same problem appeared on the other PCs, we recommend you have to send it back to our local dealer and ask a service man to do some tests to it.
We are aware there are compliance issues Pci-E 1-3A with certain manufacturers and will endeavour to sort a solution asap.
Best regards,
Customer Service Department, Leadtek Research Inc
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Well well well, what do we have here, a compliance issue.
Would never have guessed. Thanks to the 5% who gave some constructive answers.
The other 95% should do some research before opening their mouths. In fact more a hinderance than anything else. So much for many of your technical skills.