Question New AMD system doesn't start

[Milou]

Hi, I just built my new system but it does not boot. My parts are the following (all brand new) :

Asus rog strix B550-F wifi II
Ryzen 5 5700x
Coolermaster Hyper 212 Evo
Amd Radeon 6750xt (MSI Gaming X Trio)
G Skill Ripjaws 2x16 GB 3600 MHz CL16
XPG GAMMIX S70 BLADE 2 TB
Gigabyte UD750GM Modular Pozer Supply
CoolerMaster TD500 mesh v2

The when I plug in my PSU the ROG logo on the motherboard lights up, but the PC does not boot. I double checked all cables, tried to jump start the PC with a screw driver, tried to boot with each one of the RAM sticks separate but the PC does not start. When I press the start button I get a small "chuck" sound as if the computer wants to start but nothing happens. I even flashed the BIOS of the motherboard.

When I was checking the cables, I tried to boot without the CPU power cables and for some reason the fans started to spin but when I plugged again the CPU 8-pin and 4-pin nothing happens.

Does anybody know how to fix this ?

 

[Lutfij]

Welcome to the forums, newcomer!

Which 2 slots on the motherboard are the sticks of ram populating? Did you test your system when it was built outside the case, i.e, when it was breadboarded?

I've also checked to see that your PSU has necessary connectors for everything on your list. You need to make sure you've hooked them up the right way, without forcing them on. Also helps to make sure your connections are secure.

 

[zinkles]

I even flashed the BIOS of the motherboard.

to what version?