New Build Stopped Working Randomly

[chamomile]

Hey guys! Trying not to panic at this weird situation I've been presented with.

I built my first PC on Wednesday. It all turned on perfectly, we put the panels on, set up the OS and I've been gaming since then. 

 

Last night while I was playing Overwatch, it randomly all turned off. I saw no spark, heard no weird noses, it just all shut off. Everything went black, except my Keyboard RGB LEDs and the little power light on the GPU. My RGB mouse isn't lit, the motherboard LED strip isn't lit and neither are the LED fans, which I find weird since the Keyboard and GPU are still receiving power. 

I tried switching off the power supply, then back on and turning on the computer. All that happened was that the power light for the GPU and my keyboard lit up again. I left it over night and same situation.

The PC isn't POSTing, it isn't trying to turn itself back on or anything and pressing the power button does absolutely nothing. 

 

My power is on and I didn't trip a breaker.

Here is my PC Part Picker List for my Build:

PCPartPicker part list / Price breakdown by merchant

Type	Item	Price
CPU	AMD - Ryzen 5 2600 3.4 GHz 6-Core Processor
Motherboard	Gigabyte - B450M DS3H Micro ATX AM4 Motherboard	$71.88 @ OutletPC
Memory	Team - Vulcan 8 GB (2 x 4 GB) DDR4-3000 Memory	$50.88 @ OutletPC
Storage	Kingston - A400 480 GB 2.5" Solid State Drive	$59.99 @ Amazon
Video Card	Asus - Radeon RX 570 4 GB Expedition Video Card	$139.99 @ Newegg
Case	Corsair - Carbide Series 275R (White) ATX Mid Tower Case
Power Supply	Corsair - CXM 550 W 80+ Bronze Certified Semi-Modular ATX Power Supply
Monitor	Asus - VG245H 24.0" 1920x1080 75 Hz Monitor	$189.19 @ Amazon
Keyboard	Corsair - K55 RGB Wired Gaming Keyboard	$49.88 @ Amazon
Mouse	Corsair - Harpoon RGB Wired Optical Mouse
	Prices include shipping, taxes, rebates, and discounts
	Total (before mail-in rebates)	$576.81
	Mail-in rebates	-$15.00
	Total	$561.81
	Generated by PCPartPicker 2019-04-13 13:22 EDT-0400

Where should I start for trouble shooting? I've been on Google and Youtube for hours and nothing seems to apply to my situation LOL. Please lend a hand, thanks

[Firewrath9]

try manually shorting out the power on, and is there a post code/debug LEDs?

[Fasauceome]

PC specs would help, including PSU make and model, attaching a pcpartpicker list would be nice

[chamomile]

1 minute ago, fasauceome said:

PC specs would help, including PSU make and model, attaching a pcpartpicker list would be nice

PCPartPicker part list / Price breakdown by merchant

Type	Item	Price
CPU	AMD - Ryzen 5 2600 3.4 GHz 6-Core Processor
Motherboard	Gigabyte - B450M DS3H Micro ATX AM4 Motherboard	$71.88 @ OutletPC
Memory	Team - Vulcan 8 GB (2 x 4 GB) DDR4-3000 Memory	$50.88 @ OutletPC
Storage	Kingston - A400 480 GB 2.5" Solid State Drive	$59.99 @ Amazon
Video Card	Asus - Radeon RX 570 4 GB Expedition Video Card	$139.99 @ Newegg
Case	Corsair - Carbide Series 275R (White) ATX Mid Tower Case
Power Supply	Corsair - CXM 550 W 80+ Bronze Certified Semi-Modular ATX Power Supply
Monitor	Asus - VG245H 24.0" 1920x1080 75 Hz Monitor	$189.19 @ Amazon
Keyboard	Corsair - K55 RGB Wired Gaming Keyboard	$49.88 @ Amazon
Mouse	Corsair - Harpoon RGB Wired Optical Mouse
	Prices include shipping, taxes, rebates, and discounts
	Total (before mail-in rebates)	$576.81
	Mail-in rebates	-$15.00
	Total	$561.81
	Generated by PCPartPicker 2019-04-13 13:21 EDT-0400

 

[Fasauceome]

1 minute ago, chamomile said:

Power Supply Corsair - CXM 550 W 80+ Bronze Certified Semi-Modular ATX Power Supply  

You wouldn't happen to have a friend's PC to cross test with would you? Your PSU with their components, theirs with your components?

[chamomile]

My boyfriend has his own PC, we could do that

[Srijan Verma]

28 minutes ago, chamomile said:

I was playing Overwatch

did you loose any sr?

 

[chamomile]

2 minutes ago, Srijan Verma said:

did you loose any sr?

 

haha i have 1300 dollars down the drain and you ask about my sr

[Stormseeker9]

Clear CMOS and reseat GPU you could try too 

[Srijan Verma]

1 minute ago, chamomile said:

haha i have 1300 dollars down the drain and you ask about my sr

just trying to lighten up the mood.

Since you tried about where to start troubleshooting
have you tried this?