Question No Power to Motherboard.. Seeking Help!

[DeathPill]

Hi

Thanks for dropping by and trying to help a new fellow member here.

I have come across a weird problem. So here it goes:

My PC Build:
i5 12400
MSI B660m a pro wifi ddr4
G.Skill Ripjaws V 8gb x 2 3600mhz
Deepcool AK400
Deepcool dq750 M2VL PSU
Deepcool Mattrexx 55 4f Mesh

All parts are new and hence within warranty. So i finish building my PC and the PC ran well for a week or so untill 1 day when I tried to turn it on and nothing happened. No power to anything. No fans spinning.. nothing happening in the system.. Upon some diagnosis and trying to jumpstart PSU, i realised the PSU has failed. Gave it for RMA. Received a new pc after a week. All excited to get back into my PC and installed the PSU. But again nothing. No Power. Upon checking the PSU, its dead again.

Now I am completely stuck here with PSU's blown twice right after the other and I do not know what is causing this.

Any direction/help will be nice

 

[DeathPill]

In case anybody needs to know how to do this...

View attachment 61809

Correct!

That's what I did to test.

 

[DeathPill]

Update:

Borrowed a PSU from a friend to check my PC. This was a 500w PSU and my PC worked flawlessly.

Sad to see how Deepcool manages their quality of PSU.