Are these symptoms of a bad power supply?

[pgiurk00]

So I have a sneaking suspicion that my power supply is starting to fail. My computer pretty much runs fine when not under load, but under gaming load it will frequently BSOD. My i5 3570k was overclocked to 4.8Ghz with watercooling for about two years. I am mentioning this because I figured the overclock is causing the crashes and becoming unstable. After tweaking it and finally just going back to the factory settings, it is still crashing under load. The next symptom is that pretty much everytime I reboot the computer after the BSOD it takes about 3 cycles of turning it on and off because my raid 0 kingston array does not show up until a couple POSTS. So it'll just say no bootable media is available. This just makes me think that there is something that is not having a good connection in the power supply since when my system requires more power at full GPU and CPU load it will crash. And then it needs time to be able to provide power to the SSDs again. Maybe it's just dust build up? But I have a intake filter. I am very lost and not sure. I am also thinking that it's possibly the motherboard. Any input is appreciated and thanks in advance.

 

Hardware:

Processor: i5-3570K

CPU Cooler: NZXT Kraken 280MM Radiator

GPU: GTX980TI

GPU Cooler: NZXT Kraken 280MM Radiator 

SSD: 2 Kingston 240GB SSD Raid 0

HDD: 1TB 2.5mm Drive

Motherboard: I don't remember and am not home at the moment to check.

PSU: Rosewill 750W Gold Certified PSU

[iBabySlapper]

Yeah, it's most likely your PSU, but it's possible that's it's the RAM too.

[pgiurk00]

Cool, that's what I'm thinking. I tested the ram. It tests out fine. If anyone else has input it would be much appreciated. 

[glitchmaster0001]

it sounds like the power supply is bad. I had the same issue on my PC with a 2500 non k and when i swapped the PSU, everything worked fine.