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Why won't my graphics cards work?

Tags:
  • Power Supplies
  • Computers
  • Graphics Cards
  • Motherboards
  • Graphics
Last response: in Graphics & Displays
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September 27, 2014 10:17:48 AM

Hey guys, I've been dealing with this issue for the past three years now and it's been driving me nuts. Ever since I had my desktop shipped across the country, I've had problems with my graphics card. At first the problem was that my computer would run fine then after gaming for a few hours I'd get a screen tear followed by a blue screen or just the computer straight up freezing. I sent my graphics card to XFX and they said it was working perfectly fine so I thought that wasn't the problem. I then put in an old GTX 9600 and to my amazement worked with no problems. So at this point I'm confident it's the graphics card. So lo and behold I buy a new graphics card and this time it doesn't even display. Damn so I got a DoA. But before I send it out I attach it to another computer I have and what happens? Of course it works perfectly fine, and so does the other graphics card. Now I'm thinking well if it works on one computer but not the other it might be the power supply not supplying enough power to the cards. Nope. Bought a new PSU with waaaay more then enough power (850w gold rating) and still doesn't display anything. I've been baffled by this problem for so long and it's to my belief that it must be the motherboard. Which I find odd since the older graphics card worked perfectly fine. What are your thoughts? I'd hate to buy a new MOBO and have it just be a waste of money. Thanks.

Hardware:
CPU: Intel i5 3570k
Motherboard: Gigabyte GA-Z77-D5H
OLD PSU: Corsair CX600
NEW PSU: Corsair HX850
OLD GPU: XFX Radeon HD 6770
NEW GPU: PowerColor R9 270x
RAM: G.Skill Ripjaws 1600 (4x4)


TL;DR
Graphics cards don't work on my computer. Not sure what hardware problem it is and I'm fairly certain it's not the graphics cards themselves.

More about : graphics cards work

a b ) Power supply
a b U Graphics card
a b V Motherboard
September 27, 2014 10:21:48 AM

Are you overclocked? Can you try with just one stick of RAM?
Sounds like the mobo, but I can't be 100% sure.
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September 27, 2014 10:29:42 AM

Alex Kelly said:
Are you overclocked? Can you try with just one stick of RAM?
Sounds like the mobo, but I can't be 100% sure.


I have no overclocking at all on my computer. I can also try with one stick of RAM but I'm not really sure what that would accomplish. Also another interesting thing I forgot to mention is that the graphics cards don't work on any of the PCI-E slots. There are only two but I never even used the other except for when trying to see if it would work.
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a b ) Power supply
a b U Graphics card
a b V Motherboard
September 27, 2014 10:31:02 AM

Sometimes faulty RAM can cause issues, but it is unlikely.
I do think it is the mobo.
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