Mainboard problem or dead water cooler

Fiona78

Fiona78

Fiona78

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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.
https://www.pcper.com/files/news/2013-01-06/03_X700_03.jpg

** Do Not Hotlink Images **

No one I know knows about water cooling even the tech in PC world didn't.
Thanks in advanced for replies. Fiona
 
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As you have one warm pipe and the other is cooler that would suggest that water is circulating around the loop. With the pc running if you put your fingers on the pump/block (round black bit) you should feel it vibrating if it is working. Do you know how the pump is powered? Usually it's a 4 pin molex straight from the psu or a 3/4 pin connector plugged into the motherboard. If it's the latter then that could be the 4200rpm cpu fan speed unless it's that other small fan being read.

One thing I would do though is replace the thermal paste. As it's been on there for five years it may have dried out and five years is a long time to go without replacing it. It's easy enough to do and there is no need to remove the cpu. Just remove the block/pump and swing it out of the way so that you can access the cpu. Clean the old paste off the cpu and base of the block/pump. I use kitchen roll and IPA but if you don't have any IPA do the best you can with some kitchen roll which should remove it anyway. Ensure there is no dust on either surface and apply a grain of rice sized blob to the center of the cpu's heatspreader. Refit the block and as you tighten it back up it should spread the thermal paste on the cpu. Boot up and test the temps again.
 
thank you for your reply. no vibration or noise from the water cooler it isn't making any noise at all. I will order some thermal paste and get that done asap thanks.
 
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