(PSU) PC Restarts when booting up & Shows Power Failure Infoscreen

[ikernelpro3]

As soon as I start my pc, 3 leds blink up (debug leds) and then shut down again which means: after I click the Power button, the pc boots up for <1s and then shuts down again...

The behaviour mentioned above seems to be a result of my mainboards psu-fail-protection mechanism (<- Guess).
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My PSU is a Corsair CX 550M watt psu. I've had it since last year and it works perfectly fine, my pc is not crashing because it needs more electricity or anything else. So I highly doubt its the psu.
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After the pc shuts down and I press the button again, it acutally boots up to this screen:

(not my image, but the last sentences with "power supply surge" match up with what's on my screen).
I don't overclock / never overclocked before and my bios settings are pretty much out of the box defaults except Power-Fail Protections or other minor settings which should be enabled by default to protect the hardware...
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Both problems (shutdown & warning screen) are present at every boot and the last time everything worked (no warning) was probably 2 months ago.
What is the issue here? I'm pretty sure I've 1yr of warranty left on that PSU but again, I highly doubt its the psu rather a software / communication mistake, but what do I know😛
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TL;DR:
PC shuts down after clicking the power button, "Power supply surge protection" Screen appears after 2nd attempt to boot.
PSU: Corsair CX 550M
Mainboard: MSi B350 PC MATE (atx)
GPU:GTX1060 6gb
CPU: R5 1600 (not oc)
RAM: 1 Breadsticks of 8GB DDR4 RAM (not oc)

 

[velocityg4]

It means the PSU is faulty and you need to send it back to the manufacturer for replacement. Contact Corsair ASAP. Stop trying to use the computer because you are at great risk of frying every component Just hope it isn't too late already.

A PSU surge means there is some problem with voltage regulation. The lines running to your motherboard from the PSU are at too high a voltage. It has nothing to do with how much power your equipment uses or if it worked fine before. Most things work fine before they break.

This would not be software related. The error is occurring during POST. This is before your OS starts to load off your HDD/SSD.

 

[ikernelpro4]

^ +1, Will RMA ASAP.
Let's just hope Corsair's contact site ACTUALLY works this time (when my psu showed these errors at first, I tried to contact corsair but their contact site isn't working / HTTP Errors.

 

[hotsh0t1]

^ +1, Will RMA ASAP.
Let's just hope Corsair's contact site ACTUALLY works this time (when my psu showed these errors at first, I tried to contact corsair but their contact site isn't working / HTTP Errors.

Sounds like your PSU fried their website....sorry terrible joke.