[Solved] PSU dead on first boot?

[dfsdfgfkjsefoiqzemnd]

I installed a slightly heavier PSU tonight.  Went from BeQuiet Dark Power Pro P9 650W to P10 850W

 

As per BeQuiet's recommendation, I replaced all the cables.  Everything is connected just fine and the PC booted on the first attempt.

 

HOWEVER when I just about to actually start using it, it shut down on its own and now refuses to do anything. 

The power button on the motherboard is illuminated as it usually would be, but the PC doesn't respond to either the regular power button or the one on the motherboard.  No case ligting, the fans don't start, nothing. 

 

I don't smell anything weird, the connectors are all solid ... I just don't know what to do.  Any suggestions before I put the old PSU next to the case and hotwire the whole thing to see if it boots that way? 

[CowsGoRoar]

put the old PSU next to the case and hotwire the whole thing to see if it boots that way

[dfsdfgfkjsefoiqzemnd]

So I got ready to hotwire in the old PSU.

As I flicked off the switch on the back of the PSU, the case lit up like a christmas tree for a millisecond. Interior lights, cathodes, all LED fans, etc.

Flicking it on and off again produced the same result. Somewhere halfway between both positions, the switch did allow for full contact.

I put it back on the "On" position and suddenly it booted. Ran Furmark for 10 minutes with both side panels off, and that went fine. Put the panels on and it boots again.

Now it's running just fine, but I think there's a loose connection or a problem with the PSU's switch. This problem must have been caused by something after all.

Not sure if I should keep using it normally or if I should try to re-create the problem and RMA it.

[ProdigyzMined]

I'd recommend submitting an RMA to go ahead and get this fixed while you can. It could become a hassle in the future.

[dfsdfgfkjsefoiqzemnd]

It's been running fine for an hour or two.  Benched the PC without issues, browsed a bit, played a bit. 

Then suddenly it shut down (just complete loss of power) and rebooted 2 seconds later.  I started writing this post, then it did the same thing again. 

 

Obviously there's something wrong with this thing.  Guess I'll be calling the shop tomorrow. 

I sure hope I can just swap the PSU itself.  Not in the mood for more cable managment and because I also use this PC for work I need to have it running reliably by Tuesday.

[dfsdfgfkjsefoiqzemnd]

<post removed>

[ionbasa]

RMA the PSU. On my last build I had an EVGA power supply do the same thing. Brand new, wouldn't work right. Better to play it safe than end up with fired components.

 

EDIT: Glad to see you have it sorted all out, sans the cable management .

[dfsdfgfkjsefoiqzemnd]

hehe, that's sorted now as well. PC is all closed up again and purring like a kitten.

That pic was with the disconnected 850W inside the case and the 650W actually feeding the components from the side of the case. Hence the double wiring.