GPU overheat / Gurgling Sound with closed loop

Badelhas

New member
Hello guys


I have a closed loop (Asetek 760GC and Asetek 740GF) setup for my CPU and 2 GPU´s, I installed it 2 years ago and everything was great until a week ago my PC started reebooting without any warning or BSOD. When it does, which is ten minutes or more after the first time I turn it on on that day and after that it reebots even in BIOS. I decided to investigate and noticed that one of my GPU had the temps rising slowly even in idle mode, when the other was at a steady 27 deegres celcius and I also hear a gurgling sound from the WC on the GPU.
What can I do to solve this, in your opinion?

Thanks for the help.


Cheers

Andre
 
Have you bled the WC loop lately? and check the temps on the other components in the loop as well

EDIT: I have just seen that your other GPU is at 27 C hmm it may be a blockage in that gpu's waterblock I would flush the system out tbh
 
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Have you bled the WC loop lately? and check the temps on the other components in the loop as well

EDIT: I have just seen that your other GPU is at 27 C hmm it may be a blockage in that gpu's waterblock I would flush the system out tbh

Thanks but it´s a closed loop, a pre-made watercolling unit, so there is no bleeding to be made ;)
Other components temps are fine. I´m gonna try moving the pump so air bubles inside (which shouldnt even be there since its closed) move along or something. I didnt see any leak but I will check again when I get home.
Any thoughs?
 
we had an AIO cooler on a engineering sample chip here at work. At first we thought it was the CPU going crazy as it was a sample but on closer inspection i noticed a small amount of corrosion on the joint between tube and the rad. the corrosion had spread into the loop and small particles were jamming the pump or getting stuck in the block causing it to intermittently (and spectacularly) overheat. Swapped it for a decent air cooler, no probs since.

have a really good look at the fittings and tube joints. Maybe take it off and gently tip the rad from side to side if you can noise beyond water shifting there may be particles in the loop.
 
we had an AIO cooler on a engineering sample chip here at work. At first we thought it was the CPU going crazy as it was a sample but on closer inspection i noticed a small amount of corrosion on the joint between tube and the rad. the corrosion had spread into the loop and small particles were jamming the pump or getting stuck in the block causing it to intermittently (and spectacularly) overheat. Swapped it for a decent air cooler, no probs since.

have a really good look at the fittings and tube joints. Maybe take it off and gently tip the rad from side to side if you can noise beyond water shifting there may be particles in the loop.
First of all, thanks a lot for your help smile.gif
I have the 760GC cooling my CPU (2500k) and 2nd GPU (I assumed that since it´s the bottom one it would need less cooling but it happens to be the one with the low temp) and the 740GF cooling my middle GPU (Gtx 670).
I opened the box and I dont see any corrosion or leaks and from a video asetek has on youtube explaning how to remove air bubbles I did some shaking and it seems like its mostly gone. Problem is the middle GPU temps keep slowly getting higher and higher. When I turned my PC on it was at 55 degrees celcius and its now at 67 already, 15 minutes after. I also read on the reviews of the units that the thermal paste sucked so when I installed them I used another one, a good one.
Do you have any other ideas on how should I proceed?
 
hmm so you switch your pc on, and the middle GPU is at 55C whilst idle?

That sounds like your loop is either totally blocked or the pump is dead. The average GPU will usually idle at 30-40C and that is with air cooling.
 
hmm so you switch your pc on, and the middle GPU is at 55C whilst idle?

That sounds like your loop is either totally blocked or the pump is dead. The average GPU will usually idle at 30-40C and that is with air cooling.

I know. When I first installed it, 2 years ago, the middle gpu only got 5 degrees hotter than the other one. Yesterday it go to 70 degrees after one hour of idle. What can I do to try and fix it, in your opinion?
 
I know. When I first installed it, 2 years ago, the middle gpu only got 5 degrees hotter than the other one. Yesterday it go to 70 degrees after one hour of idle. What can I do to try and fix it, in your opinion?


If its dead you need to replace it.
 
I know. When I first installed it, 2 years ago, the middle gpu only got 5 degrees hotter than the other one. Yesterday it go to 70 degrees after one hour of idle. What can I do to try and fix it, in your opinion?

surely you can touch the pump housing and see if you can feel the pump working? My money is on it being dead.
 
If its dead you need to replace it.

I read somewhere that I can pinch the line, like completely fold the hose to see if it's working. Sorry for the ignorance but I don't have experience in this subject but what are the main symptoms I should see to check if it's really dead? The hoses are really thick and not transparent.
Thanks for your help, guys. :)
 
surely you can touch the pump housing and see if you can feel the pump working? My money is on it being dead.

This would tell you if the pump is working but as TTL said if its dead replace it
I have never had an AIO cooler I went straight from Air cooling to open loop :)
 
This would tell you if the pump is working but as TTL said if its dead replace it
I have never had an AIO cooler I went straight from Air cooling to open loop :)

Well if its working, its not dead ;). I haven't seen asetek products like this before so I cant really throw my input around much. But both CPU and GPU blocks are running from 1 single 120 radiator?
 
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