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No graphics card working in motherboard

Last response: in Motherboards
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May 30, 2013 5:38:23 AM

Well, this baffles me. I've gone through the 'PERFORM THESE STEPS before posting about POST/boot/no video problems!' forum and everything is good.

So when I first built my computer two days ago, the video didn't come on. I plugged it into the integrated and it worked. Later on I wiggled the GPU around and plugged my DVI cable in and it magically worked again :D . I closed the case and all was good.

Later that day I then opened up the
case to zip tie some cables and the GPU stopped working. I wiggled it around again and it worked :D .

When building my PC I had managed to reseat the CPU cooler wrong. I opened the case to re-seat it, and when I was done and turned it on the GPU wasn't working. I tried wiggling it again, and using a different pci power adaptor, it still didn't turn on. The fans are working however.

I've plugged it in a different pci-e slot, but it still doesn't work. I opened up my other working computer and took out the working GPU. I plugged it in the first pci-e slot and it didn't work. Therefore I'm pretty sure it isn't an issue with the GPU. I'm writing this using the integrated graphics, which works fine.
Thank you for reading all this and I'll be forever in debt if you can help me fix it <3.
When I do boot it up with the GPU in, it's just a black screen and a 'no video input' message.
May 30, 2013 6:10:20 AM

could be a faulty PCI-E slot u should test it Try another PCI-E port on the mobo, unlikely that both are defective. Make sure PCI-E Freq in bios is set to 100Mhz. if its a faulty PCI-E just RMA it
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May 30, 2013 6:13:08 AM

maybe, but just in case, what is the gpu? and your psu also
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May 30, 2013 7:07:35 AM

h3sham said:
could be a faulty PCI-E slot u should test it Try another PCI-E port on the mobo, unlikely that both are defective. Make sure PCI-E Freq in bios is set to 100Mhz. if its a faulty PCI-E just RMA it


Quote:
I've plugged it in a different pci-e slot, but it still doesn't work.

I'll do the other things you suggested right now.
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May 30, 2013 7:08:37 AM



Cons29 said:
maybe, but just in case, what is the gpu? and your psu also


GPU : Sapphire 7850 2GB OC.
PSU: CX 600.
Should I try plugging another PSU in?
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May 30, 2013 7:15:42 AM

if u r using an asus mobo try to go into BIOS and disable the onboard video card and see what happens
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May 30, 2013 7:55:02 AM

h3sham said:
if u r using an asus mobo try to go into BIOS and disable the onboard video card and see what happens


I'm not. Anyway, I'm pretty sure I've found the source of the problem - my PSU. My integrated graphics stopped working, after I re-plugged in some parts and then it wouldn't turn on. The fan's kept going on and off, so I unplugged the PSU. I plugged in a spare one and hey presto! However this PSU doesn't have the right cord for my GPU and CPU, so I'm gonna call the company I bought the bad PSU off and get a refund. Thanks everyone for your help.
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