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Odd 580 SLI Problem - Page 3

post #21 of 27
Quote:
Originally Posted by MNiceGuy View Post
Concerning the mains switch flip not only would that reset system and PSU but also the GPU
The GPUs reset the moment you turn off the system, flip or not.
The only thing that takes power is the motherboard for standby.
The GPUs do not take power from the PSU or the motherboard when the system is off (even tho the switch is on).
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post #22 of 27
Thread Starter 
Quote:
Originally Posted by Defoler View Post
The GPUs reset the moment you turn off the system, flip or not.
The only thing that takes power is the motherboard for standby.
The GPUs do not take power from the PSU or the motherboard when the system is off (even tho the switch is on).
You know I never knew that. I've been wrongfully assuming the graphics cards remained on power during a soft boot.

UPDATE:

I was able to swap in a GTX 580 Superclocked and alas the same phenomenon. I have a GTX 480 in there now getting nice and toasty to see how it does. I can't imagine that I would have missed this for the months I had the 480 in my sig rig but we will see...

ADD'L UPDATE

The GTX 480 did the same thing. That means for sure we're down to motherboard or oddly something that affected two Corsair HX-Series power supplies.
Edited by MNiceGuy - 4/12/11 at 7:44pm
post #23 of 27
Quote:
Originally Posted by MNiceGuy View Post
ADD'L UPDATE

The GTX 480 did the same thing. That means for sure we're down to motherboard or oddly something that affected two Corsair HX-Series power supplies.
Yes, I agree.

And I think the chance of having the 2 Corsair PSUs being faulty and having the identical internal faulty part is slim.

Perhaps it is good to focus at the motherboard/BIOS. I read that you have already updated to the latest one.
-Have you fiddled anything within the BIOS after the update?
-Try resetting to Default settings/ Clear CMOS?
-Perhaps take the mobo out of the case and try again
post #24 of 27
I would double check RAM settings in your BIOS. Sometimes, even though you are running at stock, having XMP enabled may cause the issues you are experiencing. Also, I would try to disable any C1E, Speedstep, etc. just to rule that out as well.

But I would bet money that it has to do with your particular RAM and motherboard. Asus motherboards have had a history of booting issues that date back to even the AMD Socket 939 days. My Socket 939 and LGA775 Asus boards both had cold and sometimes "hot" booting issues like what you are stating, that required flipping the mains in order to get things going again.
     
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post #25 of 27
Thread Starter 
Quote:
Originally Posted by covertash View Post
I would double check RAM settings in your BIOS. Sometimes, even though you are running at stock, having XMP enabled may cause the issues you are experiencing. Also, I would try to disable any C1E, Speedstep, etc. just to rule that out as well.

But I would bet money that it has to do with your particular RAM and motherboard. Asus motherboards have had a history of booting issues that date back to even the AMD Socket 939 days. My Socket 939 and LGA775 Asus boards both had cold and sometimes "hot" booting issues like what you are stating, that required flipping the mains in order to get things going again.
Thanks for all the info. "Hot" booting seems to really be the issue since even letting things cool for a minute or two will allow the system to boot normal. It's really not that big of a deal since other than this my sig rig has been as stable as reliable as I could expect a PC to be. It's just odd and it bugs me
post #26 of 27
I really think its the motherboard.

If you turn off the power and back on and it works, it seems that the motherboard has an issue with the power delivery of instant on/off without a drain.

It shouldn't be the memory or the CPU, as the only thing that takes power when you shut down and back up without fliping the switch, is the motherboard.
To make sure of that, just start the computer with one ram stick at a time and see if you still get that issue, or just run linx for an hour to make sure the CPU is stable.

This could be that only now the problem has appeared, and for a long time up until now, you just hadn't done any "hot restart".

If you can live with this for awhile until you upgrade next, its fine.
But mind you that this might degrade after awhile.
I used to have a faulty motherboard, which at some point just would go on and off a few times until it was able to actually start. Its not really fun.

Anyway I hope you will be able to pin-point exactly where the issue is.
At least you are learning as you go
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post #27 of 27
Read through this thread and since this wasn't suggested, I'll throw it out there.......I'm guessing you never experienced this problem when you had your 480 in your rig? If this is true, did you have an older bios on the mobo? Maybe reverting to the older bios could solve your problem.
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