Corsair H110iv2 and CPU overheating

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thallandchill

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Sep 20, 2017
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Hi everyone,

I just built this PC a little less than a year ago and I’m having an issue with my CPU overheating.

I’m using an ASUS Maximus Hero IX for my Mobo, with an i7 7700k and a Corsair H110iv2 cooling it. Everything was fine up until a few days ago, when my PC failed to boot and I kept getting errors saying a CPU fan was registering.

I went to the BIOS where it showed my CPU temp at 89 degrees. The H110iv2 fans were spinning like crazy, loud as shit but the temperature on the CPU never dropped and started to rise. I promptly shut my PC off and haven’t touched it until today.

I’m assuming the pump on the AIO cooler went out, however I couldn’t get into the Corsair Link software to check the pump RPMs. This is my first time dealing with an AIO cpu cooler so I’m just curious as to whether I did everything right installation wise.

My mobo has a 4 pin header for an AIO Pump which I didn’t plug anything into. I plugged one of the cables into the CPU OPT header which is 4 pin, and looks like I plugged the other into a USB header.

It was almost a year ago, and I’m fairly certain I followed the Corsair instructions but I’m not certain.

What does it sound like to you? Pump failure?
 
Solution
Karadjgne
Pump failure. If you boot into bios, you should be able to feel a slight vibration from the pump.

You should plug the 4pin directly to cpu_fan header from the pump. Or as a test, a fan in cpu_fan and the pump to the dedicated pump header. But cpu_fan must have something in it. The USB is for the Corsair link software, it's not needed unless you use the Corsair link.
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mdd1963

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Jan 14, 2006
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Plug your pump/water block into an appropriate header....

If no difference, and temps quickly climb, entirely possible (dare I say likely) that your pump has failed, a not-uncommon occurrence, unfortunately...;perhaps it is covered under warranty?)

THe fans will spin at top speed trying to cool the fluid, which , alas, is likely not even being pumped at all thru your radiator, which is likely only at room-temperature as a result...
 
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Karadjgne

Karadjgne

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Pump failure. If you boot into bios, you should be able to feel a slight vibration from the pump.

You should plug the 4pin directly to cpu_fan header from the pump. Or as a test, a fan in cpu_fan and the pump to the dedicated pump header. But cpu_fan must have something in it. The USB is for the Corsair link software, it's not needed unless you use the Corsair link.
 
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Solution
geofelt

geofelt

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Oct 9, 2006
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What has changed?
If you were working well before, you set things up adequately initially.
Double check that your pump connections are secure and have not come loose.
If you touch your finger to the pump you should be able to feel it operating.
Another possibility is that the fluid line or pump has become clogged.
If you can't find a simple cause, it is likely RMA time.
 
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Karadjgne

Karadjgne

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I just get the feeling something is missing, info. Most normally cpus will instantly shutdown or absolutely refuse to boot if there's nothing that gives some sort of rpm reading on cpu_fan header. Yet the pump is on cpu-opt. What's on cpu_fan?

Recent Spectre/meltdown microcode fixes might have funked the bios a little, maybe also fixing the cpu_fan security warning but that's grasping at straws.
 
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thallandchill

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Sep 20, 2017
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Well, everything was fine before I left for the weekend.

I came back, and my PC was off. I was able to boot it, but got a CPU Fan Error and the only thing I could do was go into the BIOS.

It showed my CPU temp at 50 degrees, but it quickly climbed to 89 degrees and the AIO fans were spinning at 100%, but the temp of the CPU wasn’t dropping at all.

It doesn’t look like I have anything plugged into the CPU Fan header, just the CPU opt header.
 
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