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Need advice for my water cooler (isn't cooling the PC)

So I think I haven ignored out what the problem is, but I wanted to post everything I know/have done since so I can get some more opinions and insights on the issue.

Around 3-4 months ago I bought a Corsair H100i V2 to cool my CPU. Now my CPU isn't even all that high-end, and I probably went way overkill for getting a new cooler after the stock one stopped working. Then again I do plan to upgrade my CPU to a pretty high-end one pretty soon.

Anyways, back to the cooler. One day my PC wouldn't boot. Started saying something about CPU fan error and then CPU temperature error, where it was getting way too hot. So I worked with it and eventually got it to boot regardless of the fan status. Now my temps would start off around 60 degrees Celsius when booting up,mans as my PC would open processes and programs and what not, that temp would just climb. My PC was hitting like 100 degrees. Obviously that isn't good so I had looked into it, and after a while I had made a self diagnosis that the pump in the cooler was KIA.

So I have already went through Corsair's support and got a return label that I can print, but I wanted to see if maybe the thermal paste had something to do with it. I figured it was a long shot, but I figured it was worth a try. Anyways, after reapplying the thermal paste, the temps didn't seems to climb as high, but still were at like 60 and climbed into the high 70s. So I am going to take the cooler out tomorrow or maybe even tonight, and get ready to send her to Cosair for replacement.

Anyways, what do you guys think? The cooler makes a really loud buzz/hum when the PC boots, but stops once it gets to my desktop and the fans aren't the culprits of the noise, that's for certain. So I am assuming that is then sond of the pump? And a sign its not working?
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  1. Best answer
    Pump failure is somewhat common on aio's though 3-4mo sounds like a manufacturing defect if the pump is already dead/dying. It's possible the sound is coming from the pump, maybe a bad bearing or something. Have you tried lightly placing your fingertip against the cooling block when booting to see if you can feel abnormal vibration from the waterblock/pump when that initial buzzing noise happens? Either way you're better off replacing it since it's under warranty, you shouldn't have to sort out the mechanics of it. They're designed to be pretty much plug and play, easy setup and use.
  2. synphul said:
    Pump failure is somewhat common on aio's though 3-4mo sounds like a manufacturing defect if the pump is already dead/dying. It's possible the sound is coming from the pump, maybe a bad bearing or something. Have you tried lightly placing your fingertip against the cooling block when booting to see if you can feel abnormal vibration from the waterblock/pump when that initial buzzing noise happens? Either way you're better off replacing it since it's under warranty, you shouldn't have to sort out the mechanics of it. They're designed to be pretty much plug and play, easy setup and use.


    I have never bothered to touch the cooling block before... so would any vibration be considered bad? I'm assuming not because you did say "abnormal", but what would be abnormal about it?

    But like you said, I shouldn't have to figure this out, so I'm going to be packing it up today and hopfully shipping it out in a day or so.
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