New Build turning on and off

Bam79 · 2 Feb 2015 at 14:49

Hi I have a new build which was working fine but now turns on and off within seconds :confused:

Cmos reset (removing the battery for 10 mins)
checked all power leads etc...
Tested with just motherboard, CPU and HSF (Also tried stock HSF)

Nothing has worked so far :confused:

My setup:

i5 4690k w/ be quiet! Shadow Rock TopFlow Quiet
Gigabyte Z97P-D3 Intel Z97 (Socket 1150)
Crucial Ballistix Sport 1600MHz 8GB
Sapphire Radeon R9 280 Dual-X 3072MB

DaleTheWhale · 2 Feb 2015 at 14:56

What power supply do you have?

Smrtka · 2 Feb 2015 at 14:56

Some more details of how does it happen ? Does it completle switches off or just the monitor goes black, is it random? did you installed anything before it started, can you work in safemode ? Random shutoffs are hard to diagnose, if you have 2 ram modules try only one at a time in different slots, also it can be tempreature thing, on CPU maybe the paste is too thick, graphic card has got restricted airflow, does Event viewer show anything ?

ED209 · 2 Feb 2015 at 14:57

have you tried with just 1 stick of memory at all to see if it then boots up?

Bam79 · 2 Feb 2015 at 15:08

ThaReaperGuy said:
What power supply do you have?

All new parts

SuperFlower Golden Green HX 550W

Tested with just motherboard, CPU and HSF (Also tried stock HSF)
Still turns on for about 3 seconds and cycles like this on and off?

All had been working fine tried a light overclock to 4 Ghz and vcore 1.2v hours before so nothing major and everything was fine.

Smrtka · 2 Feb 2015 at 15:11

Fried mobo or cpu ? got any chance to test the cpu in mates pc ?

Bam79 · 2 Feb 2015 at 15:17

Smrtka said:
Fried mobo or cpu ? got any chance to test the cpu in mates pc ?

Nope

ED209 · 2 Feb 2015 at 15:19

take the cmos battery out, unplug the PC from the mains and leave it for 20 - 30 mins and see that resets the coms and gets it working, re seat the ram and also try with just one stick of ram in if it doesn't boot after this then change it for the other stick and try again

RobHague · 2 Feb 2015 at 15:19

Have you waited? My PSU shuts off after a few seconds on first boot. Then turns back on. It caught me off guard and I thought it was overloading or something was tripping it but it turned out it's just normal behaviour for it.

Bam79 · 2 Feb 2015 at 15:21

The same thing happened when I first built it but it was because I forgot to plug in the cpu 8 pin?

Bam79 · 2 Feb 2015 at 15:23

RobHague said:
Have you waited? My PSU shuts off after a few seconds on first boot. Then turns back on. It caught me off guard and I thought it was overloading or something was tripping it but it turned out it's just normal behaviour for it.

Have done this but it just cycles on and off.

Bam79 · 2 Feb 2015 at 15:25

ED209 said:
take the cmos battery out, unplug the PC from the mains and leave it for 20 - 30 mins and see that resets the coms and gets it working, re seat the ram and also try with just one stick of ram in if it doesn't boot after this then change it for the other stick and try again

take the cmos battery out, unplug the PC from the mains and leave it for 20 - 30 mins and see that resets the coms and gets it working Tried this

ED209 · 2 Feb 2015 at 15:43

have you got a on board gpu you could use and take out the 280?

Snapshot · 2 Feb 2015 at 15:49

I've had this when the RAM isn't seated properly (or not installed at all).

Bam79 · 2 Feb 2015 at 15:53

ED209 said:
have you got a on board gpu you could use and take out the 280?

Its not the GPU as I have tested without this and the problem is already happening.

Bam79 · 2 Feb 2015 at 15:54

Snapshot said:
I've had this when the RAM isn't seated properly (or not installed at all).

Happens with or without ram when testing.

ED209 · 2 Feb 2015 at 15:58

do you have a spare PSU you can try?

Bam79 · 2 Feb 2015 at 17:04

ED209 said:
do you have a spare PSU you can try?

I tested the PSU.

After searching on the net a lot of people have had the same problem with the motherboard looping on and off :mad:

ED209 · 2 Feb 2015 at 17:12

have you tried re seating the cpu at all? wild guess but could be something to try unless the board has gone

Bam79 · 2 Feb 2015 at 17:16

ED209 said:
have you tried re seating the cpu at all? wild guess but could be something to try unless the board has gone

Tried that several times, must be a dodgy m/board