No post, cpu fan starts and stops, case and video card fan starts

[redcrit]

Hi,

My configuration is :

EVGA GeForce GTX 1050 Ti
AMD Ryzen 5 1600 Processor with Wraith Spire Cooler
Samsung 960 EVO Series - 250GB
VENGEANC LPX 16GB (2 x 8GB) DDR42400MHz
ASRock AB350 PRO4 ATX Motherboard
EVGA 500W 80 PLUS

So when I turn it on, the computer starts, the monitor remains black, no access to the BIOS, the CPU fan kind of starts then stops (see video), the computer case fan and the video card fan turn normally, the leds of the pc turn on, there is no beep sound (even though I have plugged the system speaker), mobo’s leds do not turn on.
I have tried everything said here :

I have placed the RAM on A2 and B2.
See the video:

[MEDIA=youtube]ynQRoZz_WGg[/MEDIA]

So I don’t know what to do at that point, all the parts are completely new except the motherboard bought on amazon used like new.
Any help please ?

[veeg]

Hello

It is a possibility that your psu is failing..

[Rustys]

To add what @vger stated.

Is the system over clocked?

Have you checked all of the power connections?

Remove the Video Card and connect to the onboard display?

Try booting with out any of the power connected to the Drives and disconnect any thing form the USB ports (leave the keyboard and mouse connected).

Make sure that the fan for the CPU is plugged in to the correct spot on the Motherboard.

I have placed the RAM on A2 and B2.

According to the [COLOR=rgb(243, 121, 52)]manual that is correct.[/COLOR]

[redcrit]

Is the system over clocked?
No

Have you checked all of the power connections?
How to do so exactly please ?

Remove the Video Card and connect to the onboard display?
It means trying to boot without the videocard ?

Try booting with out any of the power connected to the Drives and disconnect any thing form the USB ports (leave the keyboard and mouse connected).
There is no drive connected except the SSD, and no usb connected.

Make sure that the fan for the CPU is plugged in to the correct spot on the Motherboard.
It is.

[veeg]

Have you checked all of the power connections?
How to do so exactly please ? @Rustys

Check your power cables to make sure all connections are tight.

Remove the Video Card and connect to the onboard display?
It means trying to boot without the videocard ? @Rustys

Did your pc come with a built in video card ?

[Rustys]

Have you checked all of the power connections?
How to do so exactly please ?

Unplug and re-plug back in the electrical connections and do not force them in.

Remove the Video Card and connect to the onboard display?
It means trying to boot without the videocard ?

That is correct use the onboard built in video connection.
Will be one of two according to specification for that [COLOR=rgb(243, 121, 52)]Motherboard

• Integrated AMD Radeon™ Vega Series Graphics in Ryzen Series APU*
• Integrated AMD Radeon™ R-Series Graphics in A-series APU*

[/COLOR]

[redcrit]

I brought to the repair guy and he said that the psu was failing, he told me that the cable going to the motherboard does not give the 5v necessary. So I did a RMA of it since I bought it on amazon not so long time ago, and I ordered a new one. We’ll see

[Rustys]

Keep us informed

[phillpower2]

Any update for us?

[redcrit]

So i ordered a new psu, and then I had the same mistake, the repair tested it and told me the psu had the same problem too…
I ordered a 3rd psu from, and I got the same problem again, I figured out by myself that it could not be the PSU for the 3rd time (always buying new).

So I ordered a new mobo, an asus prime b350, received it today and guess what ? Same problem, except this the time the led of the mobo turn on, but the cpu_fan stills does the same thing.
Now I really don’t know what to do…

[Rustys]

Is the system and or any thing over clocked?

Remove the motherboard and connect ever thing out side of the system.

Place the motherboard onto a non conductive surface try the system and let us know.

[jmarket]

Has this system ever worked, or was it this way since it was built???

[redcrit]

The system is not at all overcloacked, it’s just like this since the begining.

[redcrit]

Is the system and or any thing over clocked?

Remove the motherboard and connect ever thing out side of the system.

Place the motherboard onto a non conductive surface try the system and let us know.

What is exactly the “system” please ? The processor ?

[Rustys]

System =Computer

What was the outcome for?

Remove the motherboard and connect ever thing out side of the system.

Place the motherboard onto a non conductive surface try the system and let us know.