Zotac GPU Can't Be Detected - Already Replaced Power Supply

[AStricklen]

Hey, guys! Having some trouble with my new graphics card. I've seen a lot of people with the same issue, more or less, but haven't been able to find anything that helped. Worried it may be dead, so I may have to talk to Zotac next.

Anyway, here is my current setup:
Motherboard: Gigabyte GA-78LMT-S2
Processor: AMD Athlon II X2 250 3.00GHz
Ram: 4.00GB
Operating System: Windows 7 64 Bit
PSU: EVGA 500 w1 80+ (100-W1-0500-KR)
GPU: ZOTAC GeForce GTX 750Ti

Had a pretty weak power supply to start with, so I replaced it hoping that would fix it, since it seemed like a regular issue. Power supply works great, but I still can't get my computer to detect the graphics card. I also dusted out the port, but not luck. I can run any tests someone needs me to, if that will help. Thanks a lot, guys!

EDIT: I know I have hardly any ram right now. ha. Had to loan the missus 4gb for a while.

 

[turkey3_scratch]

I think you just got a lemon. Do other GPUs work?

 

[AStricklen]

I think you just got a lemon. Do other GPUs work?

Wish I had ones to test. Don't have any on hand and it used onboard graphics before. Kind of thinking it might just be dead.

 

[turkey3_scratch]

Does your card require a PCIe adapter?

 

[Shaun o]

If you place the card in the Pci-e slot of the motherboard.

And before it you had another Pci-e based card in the system make sure you remove the video driver for it with the old card in the Pci-e slot before you place your new one in.

Reasons why the card is not detected when slotted into the Pci-e slot of the board and were using the on board solution of the motherboard at first.

Is that you have not connected the extra four pin 12v atx block, white in color from the power supply unit to the four pin block on your motherboard.
Before you connect the monitor cable to the new Pci-e graphics card you must attach the monitor cable to the video out put ports of the motherboard. If prior to it you were using the motherboard video solution.

You then have to enter the bios of the motherboard and change the primary graphics device to initialize and display first of all.

If you placed a Pci-e card in the slot of the board the interface option must be set to Pci-e or peg mode in your bios and menu option dealing with it.

Save the new changes you made in the bios before you exit it.

Swap the video cable from the motherboard video output ports to the 750 TI based graphics card

Next check what model of a Nvidia 750 card you have as some require a 6 pin 12v power connector to them direct from the provided 6 pin 12v Pci-e connector you will find on your Psu.

750 TI versions of your card often require the extra 6 pin power connector, and can be tucked away under the fan shroud of the card and missed so you need to take a good look around the card if not connected ok.

Both the four pin 12v Atx to the motherboard, and the 6 pin to the 750 Ti card must be connected along with the main 24 pin power block of the motherboard.

As a side note the 12v four pin Atx block on the board in white is used to power 75 watts of power to the Pci-e card slot of the motherboard.

Without it connected no Pci-e based card is ever detected when placed in the Pci-e slot.

Follow all of the points listed and the card will work in your system.
100% solution. for a fix.
Go on what you waiting for, you want it working !, don`t you ?

All the best, and let me know if its working fine please AStricklen.

 

[Superlp12]

Some time back when i get my first 280x, i had a case of the gpu not being detected but igpu ok. Changing mobo fail to fixed it and almost wanted to change psu. But it appears i have fried my cpu with excessive voltage. Changing cpu fixed it. I had actually return the first unit to the store and get a new unit. Hope this helps.

 

[Sumo999]

Do the drivers as mentioned above, also if you have another pcie slot try putting it in that see if it works there. Could be a problem with the board