GPU won't turn on, even fans don't spin, doesn't get detected. help!

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OWEN10578

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May 10, 2013
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So I made this new computer like a month ago and it contains these parts:
i5 4670K
GTX 750 Ti Gigabyte
Asrock Z87E ITX
Corsair H80i
Seasonic M12II 520W Bronze
2xCorsair Vengeance Pro 4GB
Kingston HyperX 3K 120GB SSD
CoolerMaster Elite 130

Now here's the problem, it has been working flawlessly. But just before, I noticed my computer has restarted after leaving it on for mining litecoins on the GPU and hosting a minecraft server. I left it on for 10 hours or so when I went out, and when I got back home it was on the login page so it has restarted. I logged in, tried to run minecraft server, it works then I tried to run cudaminer but it doesn't work saying no driver installed or something along those lines. I restarted the computer, thinking it was just a glitch. When I logged back in I still get that error and when I right click the desktop I dont see the nvidia control panel. I opened techpowerup gpu-z and was surprised that it can't find the GTX 750 Ti. I opened up the computer and the gpu fans weren't working and the heatpipe wasnt hot. I changed the power cable that supplied it with power, and it still doesn't work! Please help me, I don't get it. What did I do wrong? I plugged in everything properly, plus it was working properly before. I didn't do any modification on the gpu itself, all I use the gpu for is gaming and some litecoin mining.

Update: I went into the UEFI bios where Asrock has the system browser function and it says the PCIE slot is empty. I'm just baffled, it was working and suddenly it stops? I made sure the card is firmly seated and it still isn't detected.

Thanks in advance
 
Solution
Shaun o
Much as I hate to be the bearer of bad news it indicates the 750 Ti card is dead.
That is if you get no picture output from it when connected to a monitor, or the bios fails to detect the device.

I presume you had to switch to the on board video ports to get an image on the monitor screen.
The only other possible cause would be down to the Psu at fault for not providing the correct power to the connections required on the mobo.

So I would check that the eight pin 12v power block is seated right to the board.

If the eight pin 12v power block is.

But no power from the Psu is given to it, it will result in the 750 Ti card not being detected in the Pci-e slot of the board.

This is because four of the pins in the block are used to...
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thx1138v2

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Jun 18, 2011
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This is just a wild guess but may lead you to a solution. Most hardware failures occur early in their usage which fits your scenario of the machine only being a month old.

You said the fan doesn't work. So it's possible the fan failed while you were away and something on the card got toasted. Take a very close look at the electronic components on the card. If you see any sign at all of physically distorted or discolored components that's a sign it may have overheated. Two things to look for are bulging (not flat) tops of capacitors and discolored resistors or the circuit board traces around the resistors being discolored.

I'm not familiar enough with the hardware to know if an overheating card could damage the PCI slot or connections but try mounting something else that you know works in the same slot and see if that device is recognized by the system. If not, then the mobo or processor might be damaged. If it does work, then the damage would be on the graphics card.
 
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Shaun o

Shaun o

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Oct 7, 2007
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Much as I hate to be the bearer of bad news it indicates the 750 Ti card is dead.
That is if you get no picture output from it when connected to a monitor, or the bios fails to detect the device.

I presume you had to switch to the on board video ports to get an image on the monitor screen.
The only other possible cause would be down to the Psu at fault for not providing the correct power to the connections required on the mobo.

So I would check that the eight pin 12v power block is seated right to the board.

If the eight pin 12v power block is.

But no power from the Psu is given to it, it will result in the 750 Ti card not being detected in the Pci-e slot of the board.

This is because four of the pins in the block are used to provide 75w of power to the Pci-e slot it`s self from the board.

I would also check the six pin from the Psu is also firmly seated on the 750 Ti card at the top edge.

If both are I suspect the Psu.





 
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Solution
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OWEN10578

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May 10, 2013
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Well, I think it's dead. But I don't know why, theres no warped PCB or burnt PCB although I didn't check for capacitors. Good thing I have a 3 year warranty, I just got a new one for free a few days ago. Thanks guys!
 
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OWEN10578

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May 10, 2013
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I plugged in everything properly and it worked for nearly two months. Yea I switch to onboard to boot into windows where the 750 Ti wasnt detected also in the bios. I'll see if they new one breaks again, if it does then it's my system's problem. Though my power supply is a good one, Seasonic M12II 520W which has good reviews.

 
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