Question PC repeatedly turns itself off and on again. Mobo faulty?

litwicki23

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Sep 19, 2009
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Hi my new pc.

12900K with NZXT KRAKEN X73

2x16GB DDR4 KINGSTON DDR4

RTX 3090 Ti Gigabyte

Aorus Z690 Elite DDR4

SEASONIC 1300 PX PRIME PLATINUM

whenever i turn it on all the leds and fans turn on for a half second then turn back off again, repeat. I cleared CMOS battery. Unplugged GPU. Removed 1 stick memory the same. So what now? What part are bad? Also reseated cpu and still nothing.


My friend come with hes mobo Z690 and all parts working fine with hes mobo. So i went to shop and they exchanged me Aorus Elite Z690 to other example. I will report later.

Is this possible that mobo was faulty?
 

litwicki23

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Sep 19, 2009
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In next hour i will plug my new motherboard and see if post. But what if problem will be the same? Any possibilites that is ram related? But i tried boot even without ram , and the same issue on first mobo.. So i think all will be good this time?
 

litwicki23

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Sep 19, 2009
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18,995
I went from Aorus Z490 and 10850K to 12900K and Aorus Z690 Elite DDR4. Windows 10 is installed on SSD from 10850K build.
When new pc booted i enabled in GEAR 1 XMP ( 3600 mhz ). Then i rebooted to UEFI again without issues.

Then i reboot pc again and when windows 10 was loading pc shutts off and turns back on again. And second time it booted to Windows 10 normally. Is my pc fine? Why pc shuts off ( OFF ) and turns back again on first time,when windows 10 was loading ?