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GPU fans spinning but no video

Last response: in Graphics & Displays
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July 8, 2013 8:00:27 AM

I I upgraded my motherboard to the gigabyte ga-z77x-ud3h and now my gtx 460 won't give any signal to the monitor. The fans spin fine. I tried in all the PCI-E slots. The video card won't wven work in my old motherboard anymore either. Any suggestions?
July 8, 2013 8:03:15 AM

Have you tried booting in safe mode?
What version of windows do you have? The OEM version is tied to one motherboard and won't work with any other motherboard than that one. the OEM version is less expensive by almost half, but it only works for one install.
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a b V Motherboard
July 8, 2013 8:03:22 AM

are you using a dvi to vga adapter, if so it could be that the dvi port is a pure digital port and wont output an analogue signal, try the other dvi port.
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July 8, 2013 8:05:45 AM

Could be the power, or ram, or the card itself. Try cleaning the ram's contact pins with an eraser. Yeah im old school.
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a b V Motherboard
July 8, 2013 8:07:29 AM

The Indomitable said:
Have you tried booting in safe mode?
What version of windows do you have? The OEM version is tied to one motherboard and won't work with any other motherboard than that one. the OEM version is less expensive by almost half, but it only works for one install.


an OEM version of Windows wouldn't cause this issue, it would still load it just wouldn't authenticate, and even then you can call Microsoft and do a telephone authorization to get it attached to the new mobo as long as that is the only computer you are loading it on.

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July 8, 2013 8:07:46 AM

I am using a vga to dvi adapter and I tried it in both dvi ports, still nothing. I don't think it's the oem version I'm not sure tho the box just says GTX 460. (the superclocked edition)
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July 8, 2013 8:09:29 AM

I am seeing two slots for 6 pin connectors on the card. Do those need to have anything in them? They weren't plugged in with the old motherboard.
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July 8, 2013 8:10:05 AM

I had this problem just yesterday with a GeForce 315 and I gave it a day, and it booted fine after that but then it BSOD'd, now the same problem with the video. It's a dead card, could be what you have here.
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a b V Motherboard
July 8, 2013 8:10:16 AM

are you using an old dvi to vga adapter or one that came with the card? i would try the one with the card.
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July 8, 2013 8:10:32 AM

Heyman said:
Could be the power, or ram, or the card itself. Try cleaning the ram's contact pins with an eraser. Yeah im old school.


I cleaned and reseated the Ram.
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a b V Motherboard
July 8, 2013 8:11:13 AM

Crabonok said:
I I upgraded my motherboard to the gigabyte ga-z77x-ud3h and now my gtx 460 won't give any signal to the monitor. The fans spin fine. I tried in all the PCI-E slots. The video card won't wven work in my old motherboard anymore either. Any suggestions?


Did you do a fresh install of Windows when you put everything back together? Have you tried booting in safe mode? Do you get a POST screen? Since you have a Z77 board I'm assuming you have an Intel chip with integrated graphics, maybe try hooking your monitor up to the motherboard instead see if you can at least get the computer to boot. Also make sure you didn't bend any pins when you put your CPU into the new motherboard.
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a b V Motherboard
July 8, 2013 8:11:26 AM

yes you need to plug in the 6 pin power connector for the card
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July 8, 2013 8:11:42 AM

Crabonok said:
I am seeing two slots for 6 pin connectors on the card. Do those need to have anything in them? They weren't plugged in with the old motherboard.


those has to be plugged i believe

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a b V Motherboard
July 8, 2013 8:12:39 AM

Crabonok said:
I am seeing two slots for 6 pin connectors on the card. Do those need to have anything in them? They weren't plugged in with the old motherboard.


Yes they do need to be connected, that is how your GPU gets the power it needs
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July 8, 2013 8:13:19 AM

If you get a splash screen and boot in safe mode with command prompt, and run: /r chkdsk. I switched video cards a little while ago and had do do this to get the new one working (after stupidly reformatting my hard drive)
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a b V Motherboard
July 8, 2013 8:16:59 AM

Does your chip have integrated graphics? If so, have you plugged your monitor into the motherboards video out? IIRC, most BIOS default to integrated video output.
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July 8, 2013 8:17:30 AM

I was waiting to do a fresh install when i fixed the gpu problem. Yes the pc boots and posts fine, and the onboard intel graphics give me video. CPU has no bent pins. As for the 6 pins, I didn't have any so I found two molex to 6 pin converters, but my motherboard only has three male molex free, whereas the 6 pin connectors each have two molex ports on them, so I would need 4 molex coming from the psu in all. Would the gpu work if I only use one port on each of the 6 pins?
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July 8, 2013 8:19:39 AM

The Indomitable said:
If you get a splash screen and boot in safe mode with command prompt, and run: /r chkdsk. I switched video cards a little while ago and had do do this to get the new one working (after stupidly reformatting my hard drive)

I will try this.
rad666 said:
Does your chip have integrated graphics? If so, have you plugged your monitor into the motherboards video out? IIRC, most BIOS default to integrated video output.

Yes i plugged the monitor into the motherboard and it works with the onboard but I prefer it to detect the gpu.
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a b V Motherboard
July 8, 2013 8:20:52 AM

Crabonok said:
I was waiting to do a fresh install when i fixed the gpu problem. Yes the pc boots and posts fine, and the onboard intel graphics give me video. CPU has no bent pins. As for the 6 pins, I didn't have any so I found two molex to 6 pin converters, but my motherboard only has three male molex free, whereas the 6 pin connectors each have two molex ports on them, so I would need 4 molex coming from the psu in all. Would the gpu work if I only use one port on each of the 6 pins?


you may need a new power-supply then, it is not good to run the gpu on the molex adapters permanently.

try it with one and see if it works. if not then you will need both molex connected.

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a b V Motherboard
July 8, 2013 8:25:05 AM

i believe you have answered your own problem. If the onboard video works then the bios is only looking for it. Enable video through the PCIe slot and you should get video. Just check your bios.
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a b V Motherboard
July 8, 2013 8:28:31 AM

Crabonok said:
The Indomitable said:
If you get a splash screen and boot in safe mode with command prompt, and run: /r chkdsk. I switched video cards a little while ago and had do do this to get the new one working (after stupidly reformatting my hard drive)

I will try this.
rad666 said:
Does your chip have integrated graphics? If so, have you plugged your monitor into the motherboards video out? IIRC, most BIOS default to integrated video output.

Yes i plugged the monitor into the motherboard and it works with the onboard but I prefer it to detect the gpu.


You'll need to check your BIOS and switch it to PCIe from Integrated, then your card should work.
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a b V Motherboard
July 8, 2013 8:29:06 AM

Crabonok said:
I was waiting to do a fresh install when i fixed the gpu problem. Yes the pc boots and posts fine, and the onboard intel graphics give me video. CPU has no bent pins. As for the 6 pins, I didn't have any so I found two molex to 6 pin converters, but my motherboard only has three male molex free, whereas the 6 pin connectors each have two molex ports on them, so I would need 4 molex coming from the psu in all. Would the gpu work if I only use one port on each of the 6 pins?


The fresh install may solve a lot of your problems... your computer needs the right drivers to communicate with the new motherboard, it won't run properly on the old motherboards software. Between that and the power supply issues for your GPU I'd fix both of those and see where you stand after.
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a b V Motherboard
July 8, 2013 8:30:19 AM

rad666 said:


You'll need to check your BIOS and switch it to PCIe from Integrated, then your card should work.



The BIOS will auto-detect which to use...
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July 8, 2013 8:33:13 AM

Solved. turns out it was all in the 6 pins. Plugged one of them in and now the gpu is detected. U guys are the best
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