New build won't power on

Ross L · 3 Aug 2017 at 16:55

Hi,

I've just put together a new build HTPC and I cannot for the life of me get the bugger to power on.

The specs are

I3-6100
Asus H110m-a (also tried an alternative board)
Kingston Hyper X 2133 ram
Corsair RM550X (I've tried a seasonic X series as well)
Crucial MX300

I press the power button and nothing happens. I've even tried putting a screwdriver between the power switch prongs on the motherboard and this hasn't brought it to life either. Switching the motherboard and PSU hasn't helped either, so I am assuming I am missing something.

Any ideas?

Thanks in advance.

Cheers,

Ross

Ross L · 3 Aug 2017 at 18:04

The diagnostics I have done so far includes:

-Disconnecting everything and starting again.
-Switching the motherboard.
-Switching the power supply (worth noting the power supply didn't work on my working PC, but neither did my power supply from my working PC switch the new build on).
-Attempting to boot the PC without the case button (didn't work with either power supply).

mistersprinkles · 4 Aug 2017 at 22:47

I would guess that this particular model of board REALLY doesn't like that RAM.

Ross L · 4 Aug 2017 at 23:45

Thanks for the response. I tried turning it on without the ram yesterday and it still didn't power up. Not even a single movement from the CPU fan.

HoneyBadger · 5 Aug 2017 at 09:14

Any lights on the motherboard?

Sounds like a power issue. Are you using the same power lead? Checked the fuse?

StarShock · 5 Aug 2017 at 09:21

yeah, I'd start with the power, check the cord, plug, fuse, and switch on the back of the power supply

Ross L · 5 Aug 2017 at 09:23

Thanks for the response. No lights on the motherboard and I changed the kettle lead. The only cables that were the same were the modular cables. I do have a brand new power supply to try (another corsair rm550x), plus a new CPU fan, so I'll be trying that in the next hour or so.

EsaT · 5 Aug 2017 at 10:39

Ross L said:
The only cables that were the same were the modular cables.

You mean you tried Seasonic in that PC with Corsair's cables?
Different PSUs have different modular cabling so you should always use PSU's own cables.

Ross L · 5 Aug 2017 at 10:46

Yeah being a bit of a melon, I thought they'd be standardised like ATX sizes etc. I only realised after searching Google after posting that. I shouldn't be allowed out unattended haha.

I'm just building the setup with a new psu now.

HoneyBadger · 5 Aug 2017 at 10:50

And remember, you need the 24 pin ATX cable and the 8 pin CPU cable.

Ross L · 5 Aug 2017 at 11:03

It's alive!!!! Thanks for all your help guys. Turned out the PSU was doa (and that this moron tried to use the wrong cables to test the other power unit).