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All of a sudden, Bottom 480GTX is not detected

post #1 of 10
Thread Starter 
After all the use, today when I turn on my PC my bottom 480GTX is not detected! I have tried resetting the bios, swapping the cards between the slots even uninstalling and reinstalling drivers.

no matter what if the bottom card is a 480gtx it wont get detected, but if its on top and any other card is on the bottom slot, eg. 260gtx. it works fine...
it will also work if I only have 480GTX installed on the bottom slot alone with no other cards on top..

Anybody else having this issue ? I have tried older drivers with no luck.
post #2 of 10
Swap slots.
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post #3 of 10
On a side note. Bottleneck Hell
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post #4 of 10
Thread Starter 
My CPu isn't the Q8200, thats a different rig. so no bottle necks

Nope, cant get it to work by swapping slots.., looks like a lot of people are having this same issue as me in nVidia forums

http://forums.nvidia.com/index.php?showtopic=187813

anybody know whats going on?
post #5 of 10
REinstall driver, it wasn't detecting either of mine yesterday for some reason.
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post #6 of 10
I'm guessing faulty PCI Ex slot? Oh maybe not. Power issue?
post #7 of 10
This happened to me a while ago on my old mobo (Asus M3N72-D). My bottom slot stopped working. Updated BIOS, and my top slot stopped worked, but the bottom one started working. Very odd. Haven't troubleshooted any further than that.
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post #8 of 10
Thread Starter 
Quote:
Originally Posted by TickleMeElmo View Post
REinstall driver, it wasn't detecting either of mine yesterday for some reason.
Tickle Me Elmo, How Did You fix yours? i have already reinstalled drivers 4 times. What drivers are you guys using..?

Quote:
Originally Posted by Chuckclc View Post
I'm guessing faulty PCI Ex slot? Oh maybe not. Power issue?
Nope, the slot is working, works if I place a single card on it, but as soon as I put a top card or a 3rd card.. boom...its not detected anymore
post #9 of 10
Quote:
Originally Posted by TheBirdman74 View Post
Tickle Me Elmo, How Did You fix yours? i have already reinstalled drivers 4 times. What drivers are you guys using..?
266.58; specifically this is what happened:

1. Got second GTX480, installed everything worked fine.
2. Installed the Galaxy OC utility and found it to be a piece of crap.
3. Uninstalled it.
4. Reset and upon booting it would not recognize either GTX480.
5. GPU-Z also showed missing information.
6. I uninstalled the driver.
7. I reinstalled the driver.
8. Everything has seemed okay hitherto.
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post #10 of 10
Thread Starter 
266.58 ? those are the drivers I am using. I updated to it last week and all hell started to happen, random freezs included. Even reverting to old drivers wont help..

my 480GTx sli was perfect till today.

Let me try driver sweeper one last time and see if I can maybe get it working like you..
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