New PC Build Motherboard not turning on [ASUS PRIME B450-PLUS MASTERWATT 550W PSU AMD RYZEN]

Oct 1, 2018
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I am in the process of doing my first ever PC Build and I am running into an issue of getting the motherboard to turn on. There is not a single indication that it is turned on when I connect the power cables from the power supply to the motherboard, cpu, and gpu and jump the pwr_sw pins with a screw driver.

I tested the power supply to see if that is working by using the paper clip method and the fan spins for about 3-5 seconds and then it stops. I removed the graphics card and ram to see if that is the issue but i am still not getting it turn on.

Here is a video that I took describing the issue: https://youtu.be/u5fyuhuRucs

PCPartPicker part list / Price breakdown by merchant

CPU: AMD - Ryzen 5 2600 3.4GHz 6-Core Processor ($249.00 @ Mike's Computer Shop)
Motherboard: *Asus - PRIME B450-PLUS ATX AM4 Motherboard ($135.75 @ Vuugo)
Memory: *Team - Vulcan 8GB (2 x 4GB) DDR4-3000 Memory ($114.11 @ Newegg Canada)
Storage: *Kingston - A400 120GB 2.5" Solid State Drive ($33.75 @ Vuugo)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($49.99 @ Memory Express)
Video Card: *MSI - Radeon RX 580 8GB ARMOR OC Video Card ($338.96 @ Amazon Canada)
Case: Phanteks - Eclipse P300 Tempered Glass (Black) ATX Mid Tower Case ($79.99 @ Memory Express)
Power Supply: *Cooler Master - MasterWatt 550W 80+ Bronze Certified Semi-Modular ATX Power Supply ($73.75 @ Vuugo)
Monitor: AOC - i2267Fw 22.0" 1920x1080 60Hz Monitor ($119.99 @ Memory Express)
Keyboard: Thermaltake - Commander Bundle Wired Gaming Keyboard w/Optical Mouse ($38.05 @ Vuugo)
Total: $1233.34
Prices include shipping, taxes, and discounts when available
*Lowest price parts chosen from parametric criteria
Generated by PCPartPicker 2018-10-01 18:56 EDT-0400

UPDATE: PROBLEM FIXED
It turns out the issue was with the way the CPU was inserted. The retention wasn't fully engaged so the CPU must have not had a proper connection to the board. I re-inserted the CPU and other components and the motherboard was able to POST to my monitor!
 
I tested the power supply to see if that is working by using the paper clip method and the fan spins for about 3-5 seconds and then it stops.
Watch the video, connect a fan, then test the PSU again. https://www.youtube.com/watch?v=5FWXgQSokF4

Also may just return the cooler master PSU, buy one of those seasonic PSU. https://ca.pcpartpicker.com/products/compare/TgW9TW,fZyFf7,nB3RsY/

And one more, return the 120GB SSD too, because it is too small, get one at least 250GB or up.