Aurora R10, CPU overheating

Perform an epsa test. Sound like you might have liquid cooling issues.

you could put your fingers on the two tubes of AIO.  normally one tube ought to be cool while the other warm indicating there is flow carrying heat away and returning cool fluid.  if both tubes feel the same temp that would be a crude human test that pump is not working.  Vandiel suggested a Dell AI way to test pump rpm which is another option

@Vanadiel​ the process failed on testing CPU Fan, but I guess this happen because I don’t actually have a cpu fan. Then I’ve tried to run the cpu test (from advanced menu) and my pc shutdown. CPU temp was about 107 degrees.

@redxps630​ one tube is hot and the other is not quite cold, I’d say just a bit cold than the ambient temperature

Re:  the other is not quite cold, I’d say just a bit cold than the ambient temperature

that seems to say the pump and radiator ensemble is working.  but maybe not good enough? to carry enough heat away to cool the cpu underload.

if only you had another LGA115# AIO you could use to test.

If the CPU FAN speed test failed it's an indication your pump RPM is low or not exist ant at all.

You will likely have to replace the AIO unit as the pump is not serviceable.

Another thing to check is to make sure the rad fan is turning. Sometimes when the bearings go it turns very slowly and that will also cause overheating. But that overheating should happen slow over time.

An instant overheating like that almost always is due to the liquid not moving inside the block/pump housing.

@Vanadiel​ I can tell you that during the test the upper fan spins very very fast, I think up to the max rpms (it is very loud and I can feel a big air flow out of the cover). Sometimes the pc shutdown during this test.

When I’m lucky and the test ends, I see the 2000-0511 error and the test log shows me that fan rpm is always 0 during the test. But again, I was thinking this is normal as I don’t actually have a cpu fan.

Another thing I’ve noticed is that when my cpu goes down to 60ish degrees, the rad fan slow down. I would expect a lower temperature when my cpu is basically doing “nothing”

@redxps630​ it’s weird cause 2 days ago everything was just working. Now my cpu is around 70 degrees when idle (nothing running on my pc). I’m afraid that my AIO is just damaged

this could be due to a bios error.  consider replace cmos battery w a new one then do a RTC reset to clear cmos: 

https://www.dell.com/support/manuals/en-us/alienware-aurora-r10-desktop/alienware-aurora-ryzen-service-manual/clearing-cmos-settings?guid=guid-94341e81-58b7-48a3-9995-f7516b380aff&lang=en-us

top-chassis fan (TOP_FAN) #21

processor-cooling assembly pump-fan connector (PUMP_FAN) #22

processor socket (CPU1)

processor-cooling assembly CPU-fan connector (CPU_FAN) #24

top fan is the radiator fan

pump fan is the liquid pump

cpu fan is n/c. 

I do not have a R10 but I am deducing this from internet pic

I think Vanadiel has a R10 so could confirm

@redxps630​ yes, I confirm this is exactly my setup

Next week I’ll travelling but as soon as I’ll be back home I’ll try to reset the cmos.

Just in case this won’t help, I guess I can only try to replace my AIO. Which one should I buy in your opinion?

to avoid Dell bios startup error try Dell oem AIO

I would consider a new Dell oem MH0HN

R10 AIO

Heatsink, CPU, 95W, L-COOLER, R6 Thermal, Low Cost, 95W/65 W CPU, R7

MH0HN

 

but I am not convinced the current AIO is bad.  do you have a LGA115# cooler to borrow and test the cpu cooling.  it can be a air cooler.  although not as good as AIO, it should be able to keep cpu cool during normal operation such as chrome or Dell diagnostics.  I would do this before investing in a relatively costly AIO replacement.  What if the new AIO did not solve the CPU overheat problem?

@redxps630​ yeah, you are right. Unfortunately I can’t borrow a cooler to test.. anyway I’m not really sure on how I can investigate further to understand what is going on.

I’ve also realised that this issue showed up the same day I made a system update (through the Ubuntu system update). I don’t remember exactly which packages were updated and obviously not sure if this is linked to the issue.

a new AIO is quite expensive.  I would try reset bios when you get back and consider buy a cheaper Dell oem air cooler for the time being to investigate.