New pc not booting

[Incontext]

Hey everyone,
Recently got a new pc and put it together. The specs :
Mobo: gigabyte b250m-d3h
Cpu: i5 7600
Ram: 2x teamgroup elite plus 4gb 2133
Hdd: WD blue 1tb
Ssd: kingston a400 240gb
Gpu: gigabyte nvidia gtx 1050ti
Case: intertech q2 illuminator blue

After i plugged in everything, i pressed the power button and the psu LED flashed for like a fraction of a second. Got everything installed, plugged in but it just wont boot. Checked the power switch if it is put in correctly, tried with just one ram module and nothing. Its the 3rd time I build a pc by myself and i didnt have any issues up until now. Pretty sure i went through everything on this checklist http://www.tomshardware.com/forum/261145-31-read-posting-boot-problems . Any ideas why it wont work?

 

[DRagor]

What PSU?
If you have all connected right, probably hardware problem. Strip down to minimal build, just CPU + mobo + 1 stick of ram and PSU, no GPU and no USB things, monitor connected to motherboard.

 

[Incontext]

Forgot about the psu, its a sirtec high power element smart 650w. Gonna try the minimal build.

 

[Incontext]

Tried the minimal build and nothing. On my other pc (been using it for around 2 years) i have the exact same psu hdd and ssd and it works perfectly. Could it be because of the motherboard?

 

[DRagor]

If the PSU works at other comp, and will not even start at this one (I mean no leds, no fans spinning), you have faulty motherboard.