1st time build...connecting AIO to ASUS mobo...

DaveGwarn

DaveGwarn

DaveGwarn

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Essex
Hi all, I'm attempting to build a gaming PC for the first time and have connected everything up and installed an OS, however....

My CPU temp keeps rocketing up even in idle on the desktop. I have an ID Frostflow 240 cooler on an I5 processor. I've checked this out and removed and reapplied thermal paste (pretty sure it's not this).

One thing I'm unsure of is that I've hooked up the cooler properly. It's top mounted with the fans on exhaust. I've put both the fan cables into a single adapter and connected to the mobo. The pump cable is meant to go to SYS_PUMP header but my mobo - ASUS Prime B760M-A - does not have a header _PUMP.

It does have CPU OPT and CPU fan and I've tried putting the pump in CPU FAN and ignoring through BIOS but still can't stop the temp rising.
Also tried limiting the frequency through the CPU to take the strain off and that still does very little to stop the CPU temp rising rapidly. I must be missing something obvious but have v little experience. Any assistance greatly appreciated.
 
Thanks Tamzy. I tried the inputs per above previously but that didn't work unfortunately. Will take some pics tomorrow morning (it broke me today, 8 hours of teeth grinding )
 
tamzzy said:
No worries mate, building a PC can be intensely frustrating if it doesn't work right off the bat lol

What CPU are you using with that mobo?


could you describe what didn't work? (or what happened?)
Click to expand...
Morning Tamzy, a few drinks and few hours sleep and I'm ready to break myself trying again!

I'm using (attempting to use ..) :

Mobo : ASUS Prime B760M-A Wifi D4 (LGA1700)
CPU : Intel i5 12400F
GPU : AS Rock AMD Radeon RX 6600 Challenger
AIO : ID Cooling Dashflow 240
PSU : Corsair RM750e
RAM : 2 x 16g Corsair Vengeance
SSD : 1tb

When I said didn't work yesterday I meant when in the desktop with nothing apart from a piece of monitoring software running, the CPU temp steadily rose from high 30'sC up to 80c where I turned off.
 
lsg1r said:
Excuse the 'stupid' questions but:
Are the fans spinning?
If you touch the pump can you feel the vibrations from it working, you might even be able to hear the faint hum.
Have you got the right mount, screws and plastic tube/washers installed for the cpu socket you're using. You can have the right screw placements but the height is wrong due to the tubes/washers etc, this can be a pain with a bad manual.
When you took the pump off was the paste spread properly and I assume you've cleaned and used new paste when reattaching.

Side thoughts you might need to go into bios and change the settings for the cpu opt to 100% or even dc output for it to work properly (can't remember what I needed to do in my bios off the top of my head)
Click to expand...
LSG, thanks for responding and very happy for you to assume I'm a dummy (it's my first time trying to build so technically I am. Please see examples of this further down..)

Fans are spinning and lights are on the cooling unit

I can feel a faint vibration

I checked the instructions for the right mobo mount (at least 3 times) and looks mounted correctly

When I removed pump the first time yesterday I had made the idiot mistake of not removing the sticker on the cooler plate...I then cleaned and reapplied thermal paste.

I then checked it again later in the day to make sure the spread was even and it was, I then cleaned and reapplied again before putting back in place. I now have no thermal paste left.
 
freddie64 said:
You did remove the sticker on the cooling plate?

Did the cooler come with a SATA power adaptor for the pump?

Install video may help.

Click to expand...
Thanks Freddie, see post above, I had previously made the ridiculous mistake of not removing the sticker but fixed earlier in the process yesterday.

I do have a SATA adapter BUT the pump cable from the AIO has 3 holes but the adapter that feeds to the PSU only has 2 pins so I tried putting the pump power direct to the mobo using CPU_OPT header.

I'll add pictures of the build so far plus the cables to hopefully make my description easier to follow.
 
freddie64 said:
SATA power will be 2 wires as it will run full speed all the time.

Looking at your photos, you may be best remounting the pump so the tubes are next to the RAM.

The way you have it, waterflow is going across the CPU and not cooling efficiently. (that's my thinking and i may be wrong)

Oh and i forgot to remove the sticker on my Arctic. :o:D

May be look into undervolting the CPU as that will reduce temps as well.
Click to expand...
Thanks, I'll remount with tubes next to ram. I did try the SATA but it didn't change anything with the temp.

Any idea how to undervolt the CPU??
 
Grim5 said:
I don't know what the cause from improper installation here is, but my 2c anyway:

The fact that the cpu starts at 30c at idle and then rises to 80c at idle is very telling. This high temp and unmanaged rise means no heat is dissipated through the radiator or block.

Here are some causes for these temps:

* Pump is not spinning - pump may be dead or is not receiving power

* Sticker on the base plate

* No thermal paste applied

* Incorrect mounting of the block

* Fans not spinning



With the PC at idle, try to put your ear near the block and listen for pump noise - all pumps make noises, you should hear the motor and also hear noises of bubbles - if you do not, pump is not spinning and is dead or has no power
Click to expand...
Cheers Grim, it's not the sticker or paste and fans are spinning. I will try to listen to the pump when I get in and will take the guidance of you and others on here and remount the pump with the tubes facing the RAM. Just need to buy more thermal paste ...
 
Last edited:
Thanks for checking the manual gents, I had looked myself as well but couldn't see anything.

I've ordered some more paste and will remove and reposition the pump tomorrow and let you know how it goes . Really appreciate the help.
 
Morning Tammzy, I'm planning to remount the cooler later today but it would be worth checking the headers are enabled in BIOS first just in case. When I have the pump connected to CPU OPT, it just shows as N/A in the BIOS fan monitor so it's hard to tell?

The lights are on the pump and fans are spinning, I can feel vibrations on the tubes (could just be the fans making them vibrate for all I know), and any pump sound is hard to make out as the fans are fairly noisy and the pump itself is meant to be a pretty quiet one. Thanks again.
 
Glad it wasn't just me with the manual.... Good shout on the splitter, I'll try that out - assume the header would cope with the load from those 2 on a splitter? Then I'd put the other fan to a general fan header.
 
Afternoon all, tried the changes above but temp still rises from the point I turn on the PC and particularly ramps when I launch any applications. I have also tried capping the CPU frequency to 70% of max which helped marginally.

When power save was activated it reduced wattage going through the CPU which helped but as soon as I launch anything it starts to ramp up temps quickly to high levels 85c then I shut down.

Will try the pump reposition later, the paste is due to arrive at some point this evening...
 
It worked!!

Steps :

Removed old (stock) paste with alcohol wipes, changed the paste to Arctic MX4, changed application method from a pea sized dot previously to spreading a thin layer across the CPU with a plastic spatula.
I remounted the pump with the tubes side on instead of at the bottom, plus made sure I didn't overtighten the pump onto the CPU.

Really appreciate the help from everyone to get this fixed, saved me a bunch of money. HNY!
 
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