My PC not powering up

Kankkunen

Honorable
Jan 30, 2014
101
0
10,680
This started yesterday, it would start and then suddenly shutdown mid boot. Happened couple of times until i cut power and started again after that, worked fine for the rest of the day.
Today however, it only starts for about 1 or 2 seconds before shutting down. Fans and gpu led starts for second but everything shutdowns right after.
Could this mean that my power supply is dying? Its oldest part of my rig

Specs:
Mobo asus z170 pro gaming
Cpu i5 6600k
Ram 16gb ddr4
Gpi gtx 1080ti
Psu coolermaster gx bronze 550w