New computer wont post, please help.

[VendraxTwoHands]

I am helping a friend assemble his new computer (his first time building). 

 

Components:

Amd ryzen 5 3600

Asus prime x570-p

16gb (8x2) gskill ripjaws ddr4 3200

Corsair tx650m

Msi rtx 2080 super

Samsung 970 evo m.2 ssd (1tb)

 

On the test bench (esd mat), we had the following problem.  We turned on the power supply, motherboard rgb lights up.  Bridged the pins for the power button (if looking top down on the pin set, upper left being number 1 and increasing left to right, we bridged pins 3 and 4).  fans spin up for cpu cooler, power supply, and graphics card, but no output happens.  We clear cmos, no change. 

 

Our next thought was cou power.  The psu has 8 pin built in, but the board is 8+4, and the psu doesnt come with a 4 pin connector.  We went out and got one, plugged it in, turned on the psu.  Motherboard lights come on.  Bridge the pins, pau clicks, motherboard lights turn off, no fans spin. We tried the 4+4 pin cable in both of the psu's 8 pin slots, no change.  We unplugged the built in 8 pin connector and tried the 4+4 in that slot, psu clicked, no fans.

 

What do we try next?

 

[Sam F]

8 hours ago, VendraxTwoHands said:

I am helping a friend assemble his new computer (his first time building). 

 

Components:

Amd ryzen 5 3600

Asus prime x570-p

16gb (8x2) gskill ripjaws ddr4 3200

Corsair tx650m

Msi rtx 2080 super

Samsung 970 evo m.2 ssd (1tb)

 

On the test bench (esd mat), we had the following problem.  We turned on the power supply, motherboard rgb lights up.  Bridged the pins for the power button (if looking top down on the pin set, upper left being number 1 and increasing left to right, we bridged pins 3 and 4).  fans spin up for cpu cooler, power supply, and graphics card, but no output happens.  We clear cmos, no change. 

 

Our next thought was cou power.  The psu has 8 pin built in, but the board is 8+4, and the psu doesnt come with a 4 pin connector.  We went out and got one, plugged it in, turned on the psu.  Motherboard lights come on.  Bridge the pins, pau clicks, motherboard lights turn off, no fans spin. We tried the 4+4 pin cable in both of the psu's 8 pin slots, no change.  We unplugged the built in 8 pin connector and tried the 4+4 in that slot, psu clicked, no fans.

 

What do we try next?

 

I would make sure you don’t need to flash the bios. 

[The_russian]

The extra 4pin cpu connector is used for high overclocks and is optional, you only need to plug in the 8pin. 

10 hours ago, VendraxTwoHands said:

The psu has 8 pin built in, but the board is 8+4, and the psu doesnt come with a 4 pin connector.  We went out and got one, plugged it in, turned on the psu.  Motherboard lights come on.  Bridge the pins, pau clicks, motherboard lights turn off, no fans spin.

This part concerns me, what exactly did you buy? The psu clicking and fans not turning on most likely means something is shorting, likely whatever cable you bought. 

Make sure the power cables for the gpu are plugged in all the way, and reseat the graphics card and memory. Also you are plugging the display cable into the graphics card, not the motherboard, right?