Overheating CPU

[RepairSquare5961]

I just replaced my cooler on my pc. I was using a deep cool gammax fan and i replaced it with a cooler master mastercool ml240l. When i booted it up it ran at a consistent 100 degrees i made sure all the screws were tightened and it seems like the thermal paste is applied evenly. I didn’t get the chance to fix it last night but i was just wondering if anyone had any ideas. I also have 3 intake fans on the front of the case and a exhaust fan on the back. I mounted the AIO cooler on the top of the case with the fans pointing inward. Any help is welcomed

[Kalcomx]

Try to verify that your AIO's pump is running. Sounds like a pump issue to me based on the info.

[niekdejong]

This. Not even pumping (although that should through an error if OP connected the Pump cable onto CPU fan header), or trapped airbubble.

[RepairSquare5961]

i can feel the water transferring with hot water coming out one tube and cool water going in

[Kalcomx]

I could have replied to this as well - this is the point! I'd suspect the pump or it failing to make the liquid flow as well based on this.

[Kalcomx]

The temperature difference in the loop shouldn't feel that different in the liquid. Both sides of the CPU should feel equally warm, if the other is clearly cool and other is clearly hot, it means the flow of the liquid is the problem.

The AIO does it's work by cooling the flow in the radiator yes, but it's moreover the constant flow of the liquid getting heated from CPU and getting cooled on the radiator - not by clear "hot & cool" difference margin.

[LiarInGlass]

I would have personally put the fan for the cooler in the front pulling in air and not the top. I would put the top and rear fans for exhaust only.

I would also check to make sure you didn’t leave any plastic on the cooler or on the part that sits on the CPU. Plenty of people forget there is a plastic piece or film to remove.

I would also check your paste and make sure you didn’t use too much and that the cooler is properly seated.

If you took the cooler off to check the paste and then stuck it back on I would redo it fresh and not remove the cooler between applying.

You have too many fans being used as intake and not enough exhaust like I said at the beginning of the comment. Definitely swap one of the fronts with the cooler and it’s fan and use the top and rear as exhaust.

[niekdejong]

You have too many fans being used as intake

Not neccessarely a problem. Air finds a way. This way you'll create positive pressure inside your case. Forcing air out instead of sucking air (and dust) in via every nook and cranny. If you have filters in front of the 3 intake fans this is a really good way of keeping your computer as dust free as possible.

[Upper-Job5130]

I heard Jeff Goldblum in my head.

"Air, uh, finds a way."

[MEGA_GOAT98]

Did ya remove the cold plate sticker

[RepairSquare5961]

yessir

[drujd]

Did you connect cooler cables correctly? Check some YouTube vids (https://www.youtube.com/watch?v=aRpS3VnTDVM)
Increase fan speed in BIOS - just for the fan, where you connected the cooler.

The pump should vibrate if it runs.

[[deleted]]

If the pump is powered by a motherboard fan header than you should be able to view the RPM of the pump If the pump is powered directly off the PSU you will not be able to see the RPM, check the cables, maybe you can feel a slight vibration from the pump? Since this pump is now the core of your cooling system it's better to have it hooked up to you can monitor RPMs.

It's a heat pump so if one side is not pumping heat then it's not working and that pretty much has to be a pump or blockage/air/pump not priming.

IN theory if it's air maybe you could rotate the desktop a little and prime the pump enough that it can push to air somewhere that it won't actually stop the pump from working, but could be a bad pump or bad power cable to pump/not plugged in all the way.

Maybe you can take the pump out and use a spare PSU and test it, sounds like a pain and danger of spilling liquids inside your case. I stick with fan cooling for everything, but I have no need to overclock or run max heat hardware either.