Light but no power!

BlackEdelweiss

My son has built his pc over the last few months. I got him a new fan for Christmas and the day after he installed it the computer died.
I brought it into a repair shop and the guy said he ran a diagnostics check and said we needed a new motherboard.
I bought this and it arrived yesterday however the only sign of power is an rgb decorative light. The fan does not turn on our any other sign of power going to the board.
We have gone over all the connections and they appear to be correct.
Any ideas before I bring it back to a pc repair shop?

Spear

If the RGB is on, then it does have power.

Is there any response to the power button at all, however brief? Have you tried removing the other components, or setting it up outside the case to test? There could be a loose screw or something causing a short.

I'd be very skeptical the board is dead.

BlackEdelweiss

Spear wrote: »

If the RGB is on, then it does have power.

Is there any response to the power button at all, however brief? Have you tried removing the other components, or setting it up outside the case to test? There could be a loose screw or something causing a short.

I'd be very skeptical the board is dead.

There was a split second movement from the fan twice. Nothing more.
I took the graphics card out ti get more room to check the tiny power switch connections.

BlackEdelweiss

My son said there was also a flash of an led on the graphics card once.

Kilboor

BlackEdelweiss wrote: »

My son has built his pc over the last few months. I got him a new fan for Christmas and the day after he installed it the computer died.
I brought it into a repair shop and the guy said he ran a diagnostics check and said we needed a new motherboard.
I bought this and it arrived yesterday however the only sign of power is an rgb decorative light. The fan does not turn on our any other sign of power going to the board.
We have gone over all the connections and they appear to be correct.
Any ideas before I bring it back to a pc repair shop?

Reseat the ram or else take one stick out and vice versa (if there's two)

BlackEdelweiss

Kilboor wrote: »

Reseat the ram or else take one stick out and vice versa (if there's two)

Tried that but nothing.

Cuddlesworth

Take it out of the case, put it on a box(none conductive surface), power it up.

Disconnect all the hard drives, try to start it.
Then pull out the graphics card, try to start it.
Ram, start it,
CPU, start it.

Odd's are there is a short, caused when he plugged the fan it. Something is touching that is not meant to be.

BlackEdelweiss

I took everything out of the case and added everything one item at a time. Everything is turning on, Ied's, fans whirring etc. All was going well until we connected the monitor via hdmi and the keyboard via USB. Also there are no led's working on the case by the power button.

I think we are close but just not there yet.

jhud

Take out ram and if you have more then one use only one at a time.

Has you motherboard got onboard graphics? Dose you cpu have graphics as well so you can test setup without graphics card.

BlackEdelweiss

jhud wrote: »

Take out ram and if you have more then one use only one at a time.

Has you motherboard got onboard graphics? Dose you cpu have graphics as well so you can test setup without graphics card.

Tried removing the ram and the fan etc came on but stopped after about 2 seconds. The led on the case also came on and went off.

Replaced the ram again and back to where we were previously.