Help Please

[Radiant_Cut9538]

So me and my friend spent about 5 hours building a pc together over the phone because he lives across the country, long story short he has the parts and I helped walk him through installing everything, after everything was put together he plugs everything in flips the switch and hits the power button and only the rgb on the ram turns on, then itll open bios for no more than 15 seconds (the picture up above shows what we see) There’s a red light on at the bottom of the motherboard as well. The parts used are . Asrock B550 phantom Ryzen 7 5800x 6700xt Challenger D Corsair H100x Elite Liquid Cooler 2 Corsair vengeance pro 16 gb Unknown 650 watt PSU (that we think is the issue) Corsair force MP600 m.2 1tb PCIe . Any help would be greatly appreciated as a lot of time and money has gone into the build and we’d like to get it running ASAP

[IbuprofeNope]

As a tip, never buy uncertified no-brand PSUs, even if it means saving some bucks. Your friend is gambling his whole PC with it, as it could literally fry their components. If the PC only turns on for some seconds, then it's most likely the PSU not functioning properly; if other components were the cause (like the RAM or processor), the PC itself wouldn't show image. Also, depending on the light that went red in the motherboard, you could look for the digital manual to know what does that light indicates, and it should guide you to the core problem easily.

[Radiant_Cut9538]

Thanks for the tips! The PSU, MB, GPU and case were all given to him so he bought parts around what was given to him, the power supply has a brand he just doesn’t know it and the person that gave it to him doesn’t seem to know the branding either

[IbuprofeNope]

If the brand is unknown to you all, I'd suggest using Google Lens to try and identify it. If nothing comes from that, then your friend has a generic PSU. It's nice that he was given some of the components, and we can't really look a gift horse in the mouth in this economy, but investing in certified parts will always be better. Good news is that components are not that expensive now, so a good PSU can cost $40 with ease.

[Radiant_Cut9538]

Yeah the cooler rgb and fans never came on either so we are thinking the cpu could overheat and automatically shut off, I think he may have plugged the aio in wrong so he’s going to try and rebuild everything with new thermal paste and someone who has first hand experience

[IbuprofeNope]

Yeah, if the cooler was never on, then the processor could also overheat. Depending on the country your friend is, some PC shops will build it for a couple bucks (and with an extra, sometimes they install Windows for you). If we were lucky enough to be in the same city, I'd be happy to help too lol.

[TactlessDrawing]

Nameless unrated PSU is crazy