PC with B450M Pro4F won't work

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   I'm a first time builder; I just finished this yesterday:

ASRock B450M Pro4-F

AMD Ryzen 3 3300X

Galax GeForce GTX 1660

WD nvme SSD 500GB

Cooler Master E501L

All four fans (gpu fan, cpu fan and case fan) run when I turn it on, but I get no signal, no beeps, nothing to indicate anything is actually happening. Not only this but the whole thing turns off a restarts after about 15 seconds. When I remove the 4/8 pin power cable from the motherboard, the restarting problem disappears.

I don't think the restarting problem is a short but I could be wrong.

https://imgur.com/a/aZ1K6AF

Can anyone help me out please?

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dazzerg Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 06 Sep 2020 Status: Offline Points: 3	Post Options Post Reply Quote dazzerg Report Post Thanks(0) Quote Reply Topic: PC with B450M Pro4F won't work Posted: 06 Sep 2020 at 8:59pm
	I'm a first time builder; I just finished this yesterday: ASRock B450M Pro4-F AMD Ryzen 3 3300X Galax GeForce GTX 1660 WD nvme SSD 500GB Cooler Master E501L All four fans (gpu fan, cpu fan and case fan) run when I turn it on, but I get no signal, no beeps, nothing to indicate anything is actually happening. Not only this but the whole thing turns off a restarts after about 15 seconds. When I remove the 4/8 pin power cable from the motherboard, the restarting problem disappears. I don't think the restarting problem is a short but I could be wrong. https://imgur.com/a/aZ1K6AF Can anyone help me out please?

Reset Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 13 Jan 2020 Status: Offline Points: 99	Post Options Post Reply Quote Reset Report Post Thanks(0) Quote Reply Posted: 07 Sep 2020 at 2:50pm
	For the 3300x at least BIOS version P2.00 must be installed. Which one is in there with you? https://www.asrock.com/MB/AMD/B450M%20Pro4-F/index.de.asp#CPU If a smaller version is installed, please contact the seller. That they install the correct one.