I've had my custom water cooled pc for about a year now running stable, no problems. I haven't been pushing any overclocks or pushing the hardware at all really. Today I did a cold boot and made it to Windows log in screen, desktop started loading and then instantly power was cut. No lights on the motherboard. My first instinct was the power supply gave up. Is this most likely my case given the symptoms? I have a limited options for a psu where I live so to even get a new one I'd have to wait on Amazon.