No post and boot loop with ASRock AB350M PRO4

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Hi I met the same problem. But it is not the memory issue. 

Please see the video I posed on the youtube :  https://www.youtube.com/watch?v=Ljski7h7Fqs

The symptom is: CPU and power supply keep rebooting every 15-20s but there is nothing displaying on the monitor after I jump the "power on" two pings. We have tested the memory with another system, they are fine. We have tried three power supplies. Same thing. We EVEN have returned and replaced both CPU and motherboard from Newegg. Still the same. What can be wrong? Please advise. Thanks a lot!

Btw, the CPU fan in the video is just a temp solution.It is small but has four pin connector and was a CPU fan for some old system.

Also there is no hard drive connected but that does not matter, since at least we should see the booting page and bios.

Did we miss something stupid??? This happened to anyone here?

Please help! Thanks a lot!

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GO2019 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 22 Oct 2019 Location: sc Status: Offline Points: 10	Post Options Post Reply Quote GO2019 Report Post Thanks(0) Quote Reply Posted: 22 Oct 2019 at 11:43am
	Hi I met the same problem. But it is not the memory issue. Please see the video I posed on the youtube : https://www.youtube.com/watch?v=Ljski7h7Fqs The symptom is: CPU and power supply keep rebooting every 15-20s but there is nothing displaying on the monitor after I jump the "power on" two pings. We have tested the memory with another system, they are fine. We have tried three power supplies. Same thing. We EVEN have returned and replaced both CPU and motherboard from Newegg. Still the same. What can be wrong? Please advise. Thanks a lot! Btw, the CPU fan in the video is just a temp solution.It is small but has four pin connector and was a CPU fan for some old system. Also there is no hard drive connected but that does not matter, since at least we should see the booting page and bios. Did we miss something stupid??? This happened to anyone here? Please help! Thanks a lot!

unwantedi Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 01 Feb 2021 Status: Offline Points: 1	Post Options Post Reply Quote unwantedi Report Post Thanks(0) Quote Reply Posted: 01 Feb 2021 at 6:40am
	super helpful I was super lost before finding this post which saved me a lot of time and money that would of not been needed thank you