GPU Detected but not Working

[Waldir]

Hi

i am having a problem with my GPU (a GTX 660) that is being detected but is not working.

I know it is detected because i can see it in the windows divice manager, and also on the BIOS.

I do have the latest driver installed.

But when i set the the BIOS to use the PCI Xpress as GPU my computer gets very laggy and nothing works proprerly.

When i change back to the onboard, everything works fine (aside from gaming, of course)

Some data about the machine:

MB ASROCK EXTREME 4 Z77 LGA 1155
CPU I7 2600K 3.4~3.8 GHZ
2X4GB 8GB TOTAL RAM
HD 1TB SEAGATE 7200 RPM 32MB CACHE
HDSSD 120 GB OCZ
SPU COOLER MASTER GX-650W
GPU Zotac Geforce Gtx 660 2gb Ddr5 Pci-expres

I am using Windows 7. I have just fomarted the PC and the GPU is brand new.


Any ideas??

Thank you

 

[jay2577]

Have you disabled the onboard graphics in device manager?

 

[pokagbamo]

Another possibility, you do have the monitor plugged in to the GPU and not the Motherboard, correct?

 

[Waldir]

Have you disabled the onboard graphics in device manager?

Yes, Here is the image:

http://imgur.com/WiPogYb
It is in portuguese, but the on board is disabled and the GTX is enabled.

Thank you anyway

 

[Waldir]

Another possibility, you do have the monitor plugged in to the GPU and not the Motherboard, correct?

Yes, it is plugged on the GPU (by DVI-D)

Before installing the driver i had a pretty small image, but after insatlling the image is fine.

Thank you

 

[pokagbamo]

Can you open up the nvidia control panel? Does it properly detect your GPU?

 

[Waldir]

Can you open up the nvidia control panel? Does it properly detect your GPU?

I am not familiar with this control panel, but it does open and seens to be detecting.

Here is a image showing the GTX 660:

http://imgur.com/glsQ6er

Thank you

 

[jay2577]

Is the power plug plugged into the GTX660 from the PSU properly?

 

[Waldir]

Is the power plug plugged into the GTX660 from the PSU properly?

I would say so.

I checked right now and its is plugged pretty tight.

My PSU have just 2 PCI cables (PI3 and PI4). The GPU uses only one. I have alredy treied to switch between them.

Thank you