Extreme CPU idle temperature/ h100i pump broken?

perplexedpeanut

Commendable
Aug 13, 2016
1
0
1,510
Complete amateur at this stuff but trying to help a friend even less capable than me, so i'll try to explain as best i can.

Prebuilt system from a good company, working fine for a long time (3-4 years i think). i7 3770k overclocked. Has a Corsair h100i cooler.

Not long ago, very taxing games seemed to be running slower than usual, shrugged off as not that big a deal. Eventually got worse but still playable. Very recently, sudden massive drop in FPS across all games. Most now unplayable.

Temps running 100-105c across the 4 cores while idle! Everything else in the case seems cool enough in comparison, but the cores are boiling. Not a single crash at this point, just very slow. There's a fair bit of dust in the case.

Corsair Link says the pump is working at 2270RPM and the fans at 2220RPM. The Corsair logo isn't lit up but i think it's supposed to be? I have no idea what level of vibration i'm supposed to be feeling from the pump. One tube is very hot and one is room temp, flicking the tubes and wiggling them made the temp drop about 20-25c for a few seconds before climbing again, and now even that doesn't seem to be working.

Is it worth attempting to clean out the dust and reapply some paste? Or is this pump already completely dead? :??: Is there anything else i could try ?

Sorry for the long post and i appreciate anyone who took the time to read it even if they don't reply :) and thankyou for any helpful advice/answers! x
 
Solution
Is the radiator clean? If it is very dirty and there is no airflow over the fins, it cannot cool. Has this been cleaned out?

If the pump is reporting that it is running, than I would assume it is....if you disconnect it from power, I would assume it would report 0 RPM.

My guess is 1 (or more) of the following 3 things:

1) you have had a coolant leak and the unit is low on coolant. Unfortunately, there isn't a way to refill it unless you open it, which voids the warranty. You would need to RMA it.
2) you have an air lock. This occurs when an air bubble prevents the pump from moving coolant in a liquid cooling system. Since air is compressible but water is not, the air becomes a block that cannot be moved without manual...

rubix_1011

Contributing Writer
Moderator
Is the radiator clean? If it is very dirty and there is no airflow over the fins, it cannot cool. Has this been cleaned out?

If the pump is reporting that it is running, than I would assume it is....if you disconnect it from power, I would assume it would report 0 RPM.

My guess is 1 (or more) of the following 3 things:

1) you have had a coolant leak and the unit is low on coolant. Unfortunately, there isn't a way to refill it unless you open it, which voids the warranty. You would need to RMA it.
2) you have an air lock. This occurs when an air bubble prevents the pump from moving coolant in a liquid cooling system. Since air is compressible but water is not, the air becomes a block that cannot be moved without manual intervention. 'Flicking' the tubing as you mentioned can correct this, as can shaking the unit and tilting while it is running. This also somewhat depends the orientation of the cooler - if the I/O tubes on the radiator are oriented 'down' or at the bottom, air will be less likely to get trapped than if the I/O tubing is 'up'.
3) The radiator is dirty and cannot allow airflow to move through, allowing fans to cool.
 
Solution