[gTek]

I recently bought an EVGA GeForce GTX 660Ti Signarure 2 On sale, Also, Cause I needed a new GPU, Cause I recently switched to Desktop, Got tired of using my laptop with a I7 + GTX 560M

So, I have been using a Nvidia GeForce 8400GS temporary, Until I bought a better GPU, I decided to go with the 660Ti, [Wanted to stick with nVidia] and When it arrived, It looked nice and should work fine on the PCI 2.0 on my Motherboard.
But nope, Then the issues came.
After I installed the 660 Ti Into the First PCI-E On my motherboard, Started the computer, Fans started spinning, But no, Didn't get any picture on the screens.
Tried the 8400GS again, Worked, But not with the 660Ti, The PCI-E Power was plugged into the Card.
So, after a while, Playing around trying to fix it, I found a [Not sure to say] ugly way to Make it work.
Had to install the 8400 GS into the PCI-E #1 Slot, and the 660Ti into the PCI-E #2 Slot, And then plugged the HDMI into the 8400GS, and Then the screens [picture] went alive.
So I went into the BIOS, And checked it actually got detected, And yes, It did, And It booted with No problems into windows, And GPU Was detected in the Nvidia Control Panel.

System Specs.
CPU: Intel Core 2 Quad Q8400 2.66GHz, Clocked to 3.12GHz.
RAM: 8 GB [4x 2GB sticks] Crucial 1333 RAM
Motherboard: Intel DX38BT [Flashed to latest bios]
PSU: Corsair CX600
GPU1: nVidia Geforce 8400GS
GPU2: nVidia GeForce GTX 660Ti [Evga Signature 2]
SSD: 180 GB Intel 330 Series
HDD: 2TB Seagate Baracuda
OS: Windows 7 Professional SP 1 x64
[Not important] Case: Fractal Design Core 3000

So, Everything works fine with Both GPU's installed, Have been testing around In agmes, And getting a Ok FPS, Around 100 fps In Garrys Mod with everything on max [Playing this alot]
Video Rendering: Slow using CUDA, Was actually faster on my laptop with a 560M and a I7, Using cuda ._.
The motherboard does not have any intregated graphics output.

CPU-Z Validation: http://valid.canardpc.com/2714978
GPU-Z Validation: http://www.techpowerup.com/gpuz/eg6zm/

The Setup was before used as a Server, But should not have any affects.

So, Would the best thing to do Is to upgrade the motherboard, cpu, OR just have this weird setup with a PCI-E 1 Gen 8400 with a Pci-e 3 Gen running on Gen2 and Have the problems?

I also added my computer to the rigbuilder, It is in my signature.

 

[eXXon]

If the 8400 is in the 2nd slot, and the 660Ti is in the 1st slot, with the HDMI plugged into the 8400, would the screen come on & boot up fine?

Could you try to use DVI-D or DVI-I instead of HDMI with only the 660Ti installed?

PCI-E 3.0 is not supported by your board (CPU), but that shouldn't matter at all. It would make Zero difference with your setup

 

[gTek]

Quote:

Originally Posted by eXXon

If the 8400 is in the 2nd slot, and the 660Ti is in the 1st slot, with the HDMI plugged into the 8400, would the screen come on & boot up fine?

Could you try to use DVI-D or DVI-I instead of HDMI with only the 660Ti installed?

PCI-E 3.0 is not supported by your board (CPU), but that shouldn't matter at all. It would make Zero difference with your setup

The HDMI is just used for the 8400 GS, When I need to go into bios Or check if there's any life.

Well, I tried having the 660Ti In slot 1 and the 8400 GS, No Life sign, Computer turns off instantly when Pressing the power button.
Also tried having the 660ti Without any 8400 In Slot 1 and 2, No life sign at all.
I did try the 8400 In all PCI-E Slots, In Slot 1 = Life, Slot 2 = Life, Slot 3 [Pci-E 4x With 16xConnection = Life.
Even tried the 8400 In the slot 3 and 660ti in slot 2, But no life.
So, It sounds like the 8400 Is like a start key to get life in it.

BenQ XL2411T = Dual Link DVI [Connected to 660Ti
BenQ G2420 HD = DVI [Connected to 660Ti, + HDMI { For use in the 8400 GS to check POST, Bios



So? I really wanted to Only use the 660Ti, and Not both, The problem is that the 8400 Gets hot
due the 8400 is passive cooled.

 

[gTek]

Anyone?

 

[Jared2608]

Have you tried resetting your BIOS? Also switching off the PC, unplug it, and remove your BIOS battery. After a minute or two, you can put your battery back, and boot the PC with the 660TI in the top slot and leave the 8400GS out. This sometimes resolves annoying problems like that.

 

[eXXon]

Have you updated the Bios?

 

[gTek]

Quote:

Originally Posted by Jared2608

Have you tried resetting your BIOS? Also switching off the PC, unplug it, and remove your BIOS battery. After a minute or two, you can put your battery back, and boot the PC with the 660TI in the top slot and leave the 8400GS out. This sometimes resolves annoying problems like that.

Tried taking the BIOS Battery out, Waited 2 Minutes, Tried it, Nothing Happened, Tried to go into bios using 8400, Nothing was reset.
Even tried having it out for like 30 Minutes, Didn't work either.
Quote:

Originally Posted by eXXon

Have you updated the Bios?

Yes, It is flashed to the 2006 Bios Version [Latest] , I recently tried downflashing it to a older, No difference, So flashed it back to 2006.
Also tried adjusting settings in Bios, selecting PCI-E Graphics[, From Auto [Auto, PCI, PCI-E | Was the options].

Tried taking out 3 of the RAM Modules too just to check, Nothing, Still no response.
Also, Everytime I turn on the computer, The RED L.E.D On the Mobo flashes quickly ._. It has been doing that for a while now .
CPU to a Dual core Core 2 Duo, Just to check.
[Edit]
Tried changing CPU, But nothing happened, same issue :I

 

[gTek]

Ok...
I just tried to change the Motherboard to a Asrock G31M-GS Installed everything, Used intregrated graphics and went to bios and set Primary Graphics to PCI-E, Turned off, Took power, Installed the 660ti, Plugged the power into it, and the psu, turned It on, Worked O_O...
So, Why does a Older motherboard with my G31 Motherboard and not the Intel X38? ._.
I really wanna use the x38 Motherboard due to DDR3 and That It got enoguht PCI-E For some extension cards, And for 8Gigs of memory.