Question Motherboard lights flash when psu is turned on but doesn't work when I try to turn it on

[Phycul]

I have the Gigabyte Aorus pro wifi motherboard and the Gigabyte P650B 80 plus bronze psu. Every time that I flip the switch on the psu, the lights on my motherboard flash for a split second and immediately stop. When I try to hit the power button to turn on my pc, nothing happens. No fans turn on, no POST, nothing.

 

[rgd1101]

full system spec?

 

[Phycul]

full system spec?

Case - Antext DF600 Flux
Motherboard - Gigabyte Aorus Pro wifi
Cpu - Ryzen 5 2600
Ram - G skill Aegis 3000mhz
SSD - Samsung 960 evo 500gb
Gpu - Msi 1660 ti
Psu - Gigabyte P650B

 

[rgd1101]

Gigabyte Aorus Pro wifi

which one, they gigabyte have multiple one with that model

 

[Phycul]

which one, they gigabyte have multiple one with that model

B450 Aorus Pro Wifi

 

[rgd1101]

hardware should be compatible , recheck power from the psu to the motherboard

 

[Phycul]

hardware should be compatible , recheck power from the psu to the motherboard

I've checked my cpu 8 pin and 24 pin connectors at least 3 times, I've also checked my gpu connector countless times.
I'm worried that somehow I managed to short circuit my motherboard. Is there any way I could tell if I short circuited it?

 

[rgd1101]

did you use standoff on the motherboard to the case?

 

[Phycul]

did you use standoff on the motherboard to the case?

Yes I did

 

[rgd1101]

could test for short by taking the system out of the case.

 

[Blackink]

Is this a newly built computer or have you had it for awhile?

Can you tell, when you flip that PSU switch to on, if any of the fans even move a little? Maybe just a twitch?

 

[Phycul]

could test for short by taking the system out of the case.

I'm not sure what I'm supposed to do to test that

 

[Phycul]

Is this a newly built computer or have you had it for awhile?

Can you tell, when you flip that PSU switch to on, if any of the fans even move a little? Maybe just a twitch?

Yes I've been building this pc for the last couple of days.

When I flip the psu switch to on, the fans don't even twitch, no movement. Same with when I hit the power button to start up the pc

 

[Blackink]

If you can remove the mobo from the case, plug in the 24 & 4 pin power supply, one stick of RAM, leave the CPU & cooler in/attached, and see if it'll power up then.
If not, try another ram stick, try them one at a time.
Make sure the monitor is plugged into the graphics card.
Don't connect any hard drives, you're trying to see if it;ll just POST.