New B450M-HDV MB won't post.

[evilistix]

Hi all,
Newbie here hoping you can help. I've attempted to build a pc.
Asrock B450M-HDV atx amv Motherboard
Ryzen 3 2200 3.5 processor
1 x 16gb Corsair vengeance ddr4 ram
Cooler master master box e300l

It won't post. Both the fan for the cpu and the fan for Tower spin when I press the power button. Oh and the power button works but won't power off the pc no matter how long you hold it.

I've taken the battery out and reset the bios. I've attempted to power up the Motherboard out of the chassis on an anti static bag to ensure it wasn't shorting, still no joy.

I've removed the memory, and all connections other than the power button and heat sync fan.

I've tried with and without heat sync, I've tried hdmi and vga (there is no additional graphics card to use).

Nothing appears on screen, no motherboard lights anywhere, no noises.

This is my second motherboard in a week (as the previous one behaved in exactly the same way and I believed at the time it was faulty).

All components are new. I have followed various threads here and ran through several checks hence the previous steps.

All I can say is the cpu gets hot (if the heat sync isn't attached) and the fans spin.... That's it.

So at this point I'm thinking it may be a faulty ryzen cpu or maybe a bios issue but I believe this Motherboard should be fine... But I dunno.

Any help, greatly appreciated.

 

[alexoiu]

Hi, What exact RAM model? Try testing different one.

 

[evilistix]

Corsair - Vengeance LPX 16 GB (1 x 16 GB) DDR4-3000 Memory. I tried with it in both available slots and without being installed at all. Sadly, I don't have an alternative to try.

 

[alexoiu]

Try connecting a case speaker to the board (if available pins) and see if any beeps when starting the board without RAMs.

 

[evilistix]

There are speaker pins on the board but, I think, there is no case speaker with this case, there is a HD audio cable from the case which I think is the headphone and mic jack. But other than that I can't see a speaker or a cable for one.

 

[alexoiu]

You'd have to buy and connect one. To check if board and CPU do work.

 

[evilistix]

OK, thanks for the info. I knew I was flying blind but had hoped if there were beeps they'd come from the mboard. I'll look into a speaker thanks.

 

[alexoiu]

You're welcome. Please update the post, if possible.

 

[evilistix]

Hi, I acquired an Mboard speaker and attached. Tried starting with ram installed and uninstalled. No beeps at all.

 

[drivinfast247]

Do you have ALL the power cables plugged into the motherboard?

 

[evilistix]

Admittedly no, not at first. I had only the 24 pin atx connected. Then I read in another thread to check the 4 pin power cable was connected for the CPU. So its been attached ever since but it didn't make any difference.