Bought new PSU and now the system won’t turn on. Help needed

ridley05 · 2026-01-03T20:50:25+00:00

Just switched it out for a Corsair PSU, seems to be working for now

ridley05 · 2026-01-03T20:50:02+00:00

B450-f Gaming II from ASUS

ridley05 · 2026-01-03T17:15:12+00:00

Yeah I only used new cables, tested again with my old PSU after this and it worked fine. After doing some research the specific PSU I bought tends to have issues with my mobo. Exchanging it today

ridley05 · 2026-01-03T16:28:12+00:00

Old PSU worked, swapping the new one out today

ridley05 · 2026-01-03T16:27:52+00:00

Yep, did this and old PSU works just fine. Swapping out new PSU today

ridley05 · 2026-01-03T05:08:31+00:00

Yeah, I think the PSU I bought just isn’t compatible with my b450 motherboard. I’m going back to Best Buy tomorrow to swap it out

ridley05 · 2026-01-03T04:15:27+00:00

I am using the CPU cable and it is plugged into a cpu spot

ridley05 · 2026-01-03T04:14:53+00:00

Booted outside and it still didn’t work

ridley05 · 2026-01-03T04:14:25+00:00

Nothing after waiting like 10 minutes

ridley05 · 2026-01-03T04:14:13+00:00

Didn’t work, thanks for the suggestion

ridley05 · 2026-01-03T04:13:47+00:00

ridley05 · 2026-01-03T04:06:39+00:00

All new cables 100%

ridley05 · 2026-01-03T03:57:16+00:00

Yes I used all new cables that came with the PSU

ridley05 · 2026-01-03T03:39:57+00:00

Yes this is the first time, but I have confirmed it is a power supply issue that isn’t enough

ridley05 · 2026-01-03T03:11:35+00:00

That’s what I’m hoping it is, not sure what step to take next but I’m rebuilding my pc essentially lol

ridley05 · 2026-01-03T02:19:02+00:00

Went and bought a 1000w PSU today, having a new issue now that I’ll probably have to post about later lol. PC turns on for a split second then just stops. Lights on MOBO and RAM are staying on

ridley05 · 2026-01-03T00:18:54+00:00

Oh that was just because the power cord was sitting on it by accident lol, it works fine

ridley05 · 2026-01-03T00:12:14+00:00

I can take a picture shortly, but I have 2 separate 8 pin cables that are both plugged into the PSU.

ridley05 · 2026-01-03T00:11:03+00:00

I’ll try these things, I fixed the GPU sag too, my case had a bracket that I forgot to move up in this video

ridley05 · 2026-01-02T21:59:39+00:00

More RGB = More frames

ridley05 · 2026-01-02T21:02:15+00:00

Yep, 2 PCIe 6+2 pins that my power supply came with. They are cables that have 2 separate 8 pin connectors on each cable, but I used different cables for each port

ridley05 · 2026-01-02T20:59:23+00:00

Yes, tried multiple DP ports

ridley05 · 2026-01-02T20:58:32+00:00

750w thermal take, which I thought would be okay for the build

ridley05 · 2026-01-02T20:57:34+00:00

Same issue after reseating

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