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Need help - PSU/VGA problem

M

Meeho

Supreme [H]ardness
Joined
Aug 16, 2010
Messages
6,110
Not sure if this is the right subforum. I've just built my new PC:

2500K
Asus P8Z77-V
Gigabyte 6850
Seasonic M12-II 620W

It boots with error code: 1 long, 3 shot beeps and VGA LED is on - that indicates a VGA card problem. I've triple checked everything and couldn't find what's wrong.

I then tried taking the 6850 out and used 2500's GPU, it worked fine. Reinstalled 6850, no go. Installed my old 4670, boots ok. I then tried the 6850 again, but this time I didn't connect the 6pin PCI-E power connector. It booted fine, though only shows picture on the built in GPU! :confused:

Tried the other PCI-E cable that came with the Seasonic, even tried the other plug on the PSU, but every time it fails to boot. The card works fine in my old PC.

I find it strange that only the PCI-E lanes would be faulty on the PSU, and even then, why would it boot without it, but error out with the plug in?

Any ideas?


EDIT:

I've connected the card to the PCI-E connector of another PSU. Still the same error. Is it possible that the MBO and VGA have some strange incompatibility?

EDIT2:

It is possible. BIOS update solved the problem. Third revision from 05/2012 doesn't work with a 6850 :mad:
 
Last edited:
yeah for some reason i've noticed a lot of boards have issues with the 6850, never could understand why it was always that card. even my pos 7 year old motherboard had a bios update just to support the 6850 even though the 6870 and 6700 series and lower worked just fine.
 
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