Mainboard problem or dead water cooler

Fiona78

Fiona78

Fiona78

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Joined
13 Jan 2018
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Barrow In Furness
I've had a Medion Erazer Desktop Gaming PC MD8424 for about 5 years. Spec: Intel Core i7 3930K, Windows 7, 16gb ram, Nvidia GeForce GTX 680, Cougar psu 750w (installed a new psu as the one medion installed was only 600w) ssd hd and seagate 2tb hdd.
Last night the CPU was running at 65c and the water cooler fan came on really loud. I have medion erazer centre which gives cpu temps and fan speeds. The cpu went as high as 79 degrees so i turned the machine off. Cleaned all fans this morning ( I clean them every few months) still making loud noise coming from the back of PC!!
The CPU fan 4200rpm at one point, PCH fan 4300rpm and case fan 2100rpm.
I turned the machine off.
Could it be the water cooler and how do i replace it? It has a black radiator a fan that blows air out the back of the PC. There's two pipes, one is warm the other cooler, which are attached to a round fan above the cpu. I've never cleaned this fan. It felt hot to touch but surely if it was broke the pipe wouldn't feel cold.This is bolted to the board with four screws and it looks like there's a metal clip or wire thing under it?? I'm worried if i remove the fan it could damage the cpu, my friend did this to his pc, tried to remove the water cooler and damaged his processor pins. I
THe water cooler has made a ticking noise like a hhd but it's not from the hhd, so could be that? Been making that noise for a month or so.
In all the 5 years, never reapplied thermal paste or done anything to the water cooler.
virus checked my pc, it runs and boots up, ran malaware bytes but nothing suspicious.
Friend said it could be a diode gone on the mainboard.
03_X700_03.jpg

No one I know knows about water cooling even the tech in PC world didn't.
 
I don't know if the cooler is powering up. One pipe feels slightly cold, the otherr warm and the black part that sits abovee the processor is warm to the touch
 
The AIO cooler's pump has failed. The entire cooler has to be replaced as the pump isn't designed to be user serviceable, and it's not unusual for the pumps to fail after around five years. The pump/block, hoses and radiator are a single unit, though the fan can be separated from the radiator and possibly re-used elsewhere. If you're buying a replacement AIO cooler it'll come with its own fan.

Assuming the picture you've posted is an accurate depiction of your actual PC, your original AIO cooler is a 120mm model with a 38mm thick radiator. You can buy a like-for-like replacement, though there are not many 120mm coolers with 38mm thick radiators (Corsair Hydro H80i is one) as most use a 27mm thick radiator. There isn't a huge difference in practice between the two thicknesses and your CPU will be fine with either.

Another option is to replace with a conventional air cooler, but the VRM heatsink (the silver heatsink with 40mm fan on it, just below the CPU AIO pump) takes up a fair bit of space very close to the CPU so it seems like it would be rather restrictive in the type and size of heatsink you could use.
 
Thanks for helping!! Will replace the aio with like for like asap to avoid stressing cpu, temps too high to run pc.
 
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