GTX770 OC bus interface 2.0 instead 3.0

[Störung]

Hello,

In the weekend I received my Gigabyte GTX770 OC, no problem with installing.
The driver on the cd is 320.08 wich I first install though I knew there is newer one. (newer one is 320.8 update for Metro Last Light)
Metro LL also got free coupon with the card so after I updated the driver. Some after I noticed Windows Experience index wants to renew for new hardware so I run a new test and suddenly the graphics score went from 7.9 to 7.4!!
GPU-Z reads that the graphics card reports that it supports PCIe x16 2.0 ?! At first it was just running at 3.0. Aida64 also gives Bus Interface PCIe 2.0. Only Nvidia Inspector shows interface is 3.0 but only runs at 2.0.

I have went back to the previous 320.08 driver but it doesn't change back to right bus interface. In BIOS I have setted to Gen3.
Anyone has a clue about this? Do I need to complete delete all the drivers of GPU and reinstall?

Also, Aida64 & Iobits driver manager let me know that Nvidia sound drivers are not up to date and both link me to driver 314.xx (.22 I believe) but I cannot install that sound driver. And the 320.08 sound driver is older one then 320.8. In system tray for sound the playback devices sais all Nvidia HDMI Ouput ports (0 to 3) Nvidia High Definition Audio are not connected. I've my main screen connected HDMI. But I have sound play via Realtek. Is this a problem or can I leave this like it is?

http://gpuz.techpowerup.com/13/06/17/hds.png

[Gloup_Gloup]

Hi Störung,

Just said .... the last drivers for nVIDIA causes many problems...

Keep drivers 314.22

Describe your hardware configuration : PSU, SSD, motherboard model, revison and bios version, RAM ...

[Störung]

Updated my signature with hardware specs.

The last problem driver is 320.18 (not .8 ) only one that I get from Nvidia driver support for 770.
I should have older drivers somewhere though but not sure 314.22 already supports 700series?
I'll give it a try see what it does.

MB BIOS = F2h

[Gloup_Gloup]

Hi Störung,  

Thank for answer... good
         
Just verify, you have this board ? GA-Z77X-UD4H (rev. 1.0)
http://www.gigabyte.com/products/product-page.aspx?pid=4413#ov

IF yes, I find infos about USB Ports...

Intel Chipset:

    Up to 4 USB 3.0/2.0 ports (2 ports on the back panel, 2 ports available through the internal USB header)
    Up to 6 USB 2.0/1.1 ports (available through the internal USB headers)


Have you installed the Intel USB3.0 Driver driver
Intel (R) _USB_3.0_eXtensible_Host_Controller_Driver.zip
available on the Intel site?
https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=21129

VIA VL800 chip:
http://www.viagallery.com/Downloadimage.aspx?name=VIA_Labs_VL800_USB_3_4_Port_Host_Controller.jpg&cat=3
http://www.via-labs.com/en/downloads/catalogue/VL800-801.pdf

    Up to 4 USB 3.0/2.0 ports on the back panel
    * Due to a Windows 7 limitation, please connect your USB device(s) to the Intel controlled USB port(s) (located below the RJ-45 LAN port) before the VIA USB 3.0 controller driver is installed.

Have you installed a VIA VL800 drivers?
http://via-labs.com/en/support/downloads.jsp
Host (Driver)
VL800/801 & 805/806 Superspeed USB Host Controller Driver 4.00B – Released Apr 19, 2013


If you flahs Bios, check infos in  How Do I Update My BIOS guide.
http://forum.giga-byte.co.uk/index.php/topic,2441.msg13885.html#msg13885

He exist a bios F2k, if you want try it....
http://www.mediafire.com/download/hmvsk615t77ogit/Z77XUD4H.2k.zip
Source page: http://forums.tweaktown.com/gigabyte/28441-gigabyte-latest-beta-bios.html

About NVIDIA drivers:
I find infos...
http://www.nvidia.fr/object/win8-win7-winvista-64bit-314.22-whql-driver-fr.html

[Störung]

Great!! Thanks mate! Flashing the BIOS did it, now the bus type is 3.0 x16 again!!

[Gloup_Gloup]

Hi Störung, 

Good news.... thanks for appreciation.