290x tri-x doesn't work with x16 PCIE but it works with the x4 PCIE on my Gigabyte 970A-DS3P

[Portoflander]

Hi everybody,

 

My 290x doesn't work when it's in the x16 PCIE slot, but it works perfectly fine in the x4 PCIE slot.

At boot, when the 290x is in the x16 PCIE, the motherboard makes 2 long beeps followed by a short one, from the motherboard small speaker. Windows is booting but the screen is black at all times, the bios screen doesn't even flash.

I have an ATI 7750 and a R7 360 that both work in the x16 PCIE slot.

My PSU, a High Power HPC-620-A88S 620W, didn't have an 8 pin power connector, I had to buy and connect a MOLEX->8pin converter cable.

I need the x16 PCIE because the 290x covers my SATA connectors when it's in the x4 PCIE slot.

Does anybody know what could be the reason that doesn't let it work?

Thanks.

[kameshss]

Can you clean the GPU contact point with 99% Isopropyl Alcohol? and check if it's working.

[afyeung]

It has nothing to do with the bandwidth of those PCIE slots, either the PCIE slot or your GPU is faulty because a 290 is designed to run at both 16x and 4x. 

[stealth80]

have you tried both PCIE 16 slots? (stab in the dark here and pretty basic)

[Portoflander]

3 minutes ago, stealth80 said:

have you tried both PCIE 16 slots? (stab in the dark here and pretty basic)

My motherboard has only 2 PCIe slots, one is x16 just under the CPU and one is x4 2 slots lower.

[stealth80]

1 minute ago, Portoflander said:

My motherboard has only 2 PCIE slots, one is x16 just under the CPU and one is x4 2 slots lower.

is it not this?

 

http://www.gigabyte.com/products/product-page.aspx?pid=4591#ov

[Portoflander]

3 minutes ago, stealth80 said:

is it not this?

 

http://www.gigabyte.com/products/product-page.aspx?pid=4591#ov

Yes, in this picture you can clearly see what type of slots I have: http://www.gigabyte.com/fileupload/product/2/4591/7941_big.jpg

And here is how much space the 290x occupies: http://imgur.com/peCyTRH

[Portoflander]

19 minutes ago, afyeung said:

It has nothing to do with the bandwidth of those PCIE slots, either the PCIE slot or your GPU is faulty because a 290 is designed to run at both 16x and 4x. 

So if the other cards work, it should be the 290 the cause?

[afyeung]

2 minutes ago, Portoflander said:

So if the other cards work, it should be the 290 the cause?

Yep. There is something wrong with the card. I'd return it if you can, because typically, if a big component in the GPU is faulty, other things might be affected as well. 

[Portoflander]

41 minutes ago, kameshss said:

Can you clean the GPU contact point with 99% Isopropyl Alcohol? and check if it's working.

Thank you so much kameshss, your solution worked. http://imgur.com/oez0NFS

15 minutes ago, afyeung said:

Yep. There is something wrong with the card. I'd return it if you can, because typically, if a big component in the GPU is faulty, other things might be affected as well. 

There's no need. Thank you.

[kameshss]

8 minutes ago, Portoflander said:

Thank you so much kameshss, your solution worked. http://imgur.com/oez0NFS

Good to know that!  Enjoy!