Gigabyte GeForce GTX 770 Asrock z77 Extreme6 Graphics Issues

cjmitche · Jul 7, 2013

Did a new build with the above components and an i3770K. The GTX 770 GPU sn't working properly. The fans turn on and DVI from monitor is connected to the card and I'm getting output to the monitor. But, when I try to install drivers for the GTX 770 the system reboots. The card is also not showing in device manager. The Asrock bios is set to use graphics on PCIe and not the onboard GPU. If I move the card to another slot the system either won't power up or the graphics are very low resolution and I can't set them higher. The card is plugged into the PCIE2 slot on the MB as suggested by Asrock. The slot is PCIe 3.0 x16.

This is my second GTX 770. I returned the first one with the same problem.

Any help is greatly appreciated.

lunyone · Jul 7, 2013

What are your full system specs?

I'm suspecting a few possible issues:
* You need to verify that you have both PCI-e power connectors plugged into the GPU.
* Your PSU isn't equipped to handle the GTX 770.
* You have some other issue that is affecting your system.

I would:
* Pull the GPU out and try and boot with the iGPU and see if you can get everything working correctly.
* Use 1 RAM stick until you know everything else is fine (assuming you have 2 or more RAM sticks).

cjmitche · Jul 7, 2013

lunyone :

Thanks for the reply.

Asrock z77 Extreme6 MB
i3770K
Gigabyte Geforce GTX 770 2GB
Fractal Designs R4 Define Case
Cooler Master Hyper 212 Evo
Windows 8 Home 64B
Samsung 840 Pro SSD
WD Caviar Blue HDD
Seasonic M12II 620 Bronze (620W)
Corsair 16GB 2x8 D3 1600
LG BluRay Reader/Writer (not sure on model)

The only thing I wasn't certain about when setting up was having the power to the GPU connected via Molex. I have both the six and eight pin PCIe power cables going into Molex and one cable is also powering two chassis fans. The PSU has two PCIe cables supplied with it that are 6 pin and 6+2 pin. Would you recommend taking the GTX 770 off of the Molex and plugging them into the PSU using the PCIe power cables instead?

Thanks again, new to this.

lunyone · Jul 7, 2013

cjmitche :

lunyone :

Thanks for the reply.

Asrock z77 Extreme6 MB
i3770K
Gigabyte Geforce GTX 770 2GB
Fractal Designs R4 Define Case
Cooler Master Hyper 212 Evo
Windows 8 Home 64B
Samsung 840 Pro SSD
WD Caviar Blue HDD
Seasonic M12II 620 Bronze (620W)
Corsair 16GB 2x8 D3 1600
LG BluRay Reader/Writer (not sure on model)

The only thing I wasn't certain about when setting up was having the power to the GPU connected via Molex. I have both the six and eight pin PCIe power cables going into Molex and one cable is also powering two chassis fans. The PSU has two PCIe cables supplied with it that are 6 pin and 6+2 pin. Would you recommend taking the GTX 770 off of the Molex and plugging them into the PSU using the PCIe power cables instead?

Thanks again, new to this.

The PCI-e power connectors from the PSU are for the GPU, so plug them in directly to the GPU. That should fix your problem.

cjmitche · Jul 8, 2013

lunyone :

Connected both PCI-e connectors from the card directly to the PSU, same issue - card not showing up in device manager, unable to install drivers b/c the machine restarts after I click "Yes" to Windows "Do you want to allow this program to make changes...". I will try your other recommendations. Also, if the only display devices showing up in device manager are the Intel HD Graphics 4000 and the Microsoft Basic Display Adapter, would it make sense to update the driver on the Basic Display Adapter and point it to the NVIDIA driver downloaded from Gigabyte?

lunyone · Jul 8, 2013

At this point I would format the hard drive and re-install the OS, because who knows what condition your install is in.

cjmitche · Jul 9, 2013

Fixed. It looks like the install disk that came with the GPU had a bad driver. I used driver sweeper to remove all remnants of the old driver, uninstalled Virtu MVP and downloaded the 320.49 WHQL driver from NVIDIA. Found the card right away. Re-ran Windows Exp. Index and my graphics scores that were previously 4.5 are now 8.1. I also switched to a Corsair HX750 after the successful install b/c I read that the card needs 42A on the 12V line. The Seasonic was only pushing 24A.

Thanks for the help!

lunyone · Jul 9, 2013

cjmitche :

Glad you got it fixed. The Seasonic PSU is just fine, you have a combined 48A on the 12v rails, so it would be just fine powering any single GPU out in the market. You were only reading 1 of the 2 12v rails, which combined supply up to 576w of power (576w / 12v = 48A).

I'm assuming that you have this PSU below:

SeaSonic M12II 620 Bronze 620W ATX12V V2.3 / EPS 12V V2.91 SLI Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply

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