[SOLVED] my newly built pc boots for 15 seconds before restarting stuck in a loop

[smoof]

hello, i recently bought a pc from a buddy that has a water cooled cpu set up i have built a few pcs but not much experience with water cooling. i wanted to change the dated mobo in the new setup with my tuf z370 plus. after replacing the motherboard and re wiring everything i went for my first boot and everything looked promising fans turn on, pump starts but after around 15 seconds it restarts and keeps me stuck in this loop i’ve tried a few troubleshooting tips such as trying different ram and taking out the cmos battery. id appreciate any help offered and can provide any information that may be needed.
thank you.

current specs :
cpu - i5-9400f
gpu - gtx 1070
psu - evga 650
mobo - tuf z370 plus
ram - trident z 8x2 3200mhz
cooling - thermaltake d5 vario-38

 

[dgianstefani]

Make sure pump is plugged in.

 

[smoof]

Make sure pump is plugged in.

pump is plugged in it pumps on boot

 

[dgianstefani]

Reseat CPU.

 

[smoof]

Reseat CPU.

would it make a difference taking the bracket that holds the cpu off? i noticed on the previous mobo that it had it off but it shouldn’t affect the water block connection should it? i would’ve taken it off i just don’t have a star tool handy

 

[maxx2575]

I mean some pictures of the inside of the case would be helpful

 

[smoof]

here are some pics lmk if you need more

 

[INSTG8R]

would it make a difference taking the bracket that holds the cpu off? i noticed on the previous mobo that it had it off but it shouldn’t affect the water block connection should it? i would’ve taken it off i just don’t have a star tool handy

Yes of course it matters it needs to be mounted properly with the original mounting hardware. The CPU is probably hitting the thermal limits and shutting down to save itself.

 

[smoof]

thanks for the input i’m running to the store to buy a star tool now. will be updating

 

[ThrashZone]

Hi,
Looks fine as is except for the issue at hand

No beeps codes ?

I'd record the lights on the board during the loops and refer to the manual if no beep codes are given.

Refer to the online manual to properly clear cmos it should have jumpers to do this

If all fails just bail and reinstall the original mother board and see if it still works
I'd just use a air cooler until you find out what's going on much easier to deal with.

would it make a difference taking the bracket that holds the cpu off?

Not sure what this is

 

[Tatty_Two]

Can I ask what CPU you used in your board before the 9400F? I am presuming it would be an 8 series CPU, if so did you have an updated Bios (1410) for compatibility with the 9400F?

 

[smoof]

Hi,
Looks fine as is except for the issue at hand

No beeps codes ?

I'd record the lights on the board during the loops and refer to the manual if no beep codes are given.

Refer to the online manual to properly clear cmos it should have jumpers to do this

If all fails just bail and reinstall the original mother board and see if it still works
I'd just use a air cooler until you find out what's going on much easier to deal with.


Not sure what this is

never heard any beeps or saw any codes i’ve tried different ram sticks and different slots and had no luck. i’ve also tried my stock cpu fan and had no luck either. this makes me believe there has to be a short or something somewhere

Can I ask what CPU you used in your board before the 9400F? I am presuming it would be an 8 series CPU, if so did you have an updated Bios (1410) for compatibility with the 9400F?

the cpu i had before was in the motherboard i took out but it was a 7th gen. i had a pc before i bought this one which had my i5 9400f and the z370 mobo

Yes of course it matters it needs to be mounted properly with the original mounting hardware. The CPU is probably hitting the thermal limits and shutting down to save itself.

after taking off the bracket and tightening the water block on the cpu the pc is now booting. thank you for the help!

 

[eidairaman1]

never heard any beeps or saw any codes i’ve tried different ram sticks and different slots and had no luck. i’ve also tried my stock cpu fan and had no luck either. this makes me believe there has to be a short or something somewhere


the cpu i had before was in the motherboard i took out but it was a 7th gen. i had a pc before i bought this one which had my i5 9400f and the z370 mobo


after taking off the bracket and tightening the water block on the cpu the pc is now booting. thank you for the help!

Overheating

 

[Corduroy2739]

First off why does he need watercooling for a intel 9400f? little overkill for low tdp and a locked cpu, i personaly don't think its overheating problem, and also that's a werid config to have the reservoir and rad below that gpu makes no sense to me lol