computer non start

timbo2410 · 19 Sep 2013 at 10:42

Hi all, I have a home built system with everything internal from Overclockers. It's my first build but has run without a fault since I built it (around 2 years ago).
Here are the specs:
mobo: gigabyte x58 UD3R
Ram: Patriot 1600mhz DDR3 6GB (3x2)
1 x intel SSD
2 x Samsung f3 1tb
Corsair HX 750W ATX
Corsair H70 Cpu cooler
Win 7 (64) pro
LG Bluray rw

Now I went to start it up and I get a second of power where the fans and mobo lights come on and then it shuts itself off. I've systematically disconnected everything and started to try and sort out where the problem is, but I'm now down to just the mobo and PSU. Any hints on what to do next?

Gambisk · 19 Sep 2013 at 11:02

If I'm reading this correct when you boot with just the mobo connected it turns off in a few seconds? Are there any diagnostic lights on either the mother board or PSU?

Admiral Huddy · 19 Sep 2013 at 11:09

As above.

Before you do anything make sure all your front panel connectors are secure and in place. Make sure they aren't shorting. You can jump start the PC by using a flat end screw driver just to see if it fires up ok thereby eliminating any FP connectors. Make sure the motherboard isn't making contact with the chassis and that both 24pin and 4/8pin ATX power is connected

Have your tried testing the essential components outside the case? Motherboard, RAM, CPU, HSF and PSU.. Connect the monitor to the on board connectors. You don't need a HHD connected, we are just seeing if it boots.

Next check your is your PSU is functioning as expected. Use my guide here:
http://www.huddysworld.co.uk/index....rking&catid=40:techie-talk-hardware&Itemid=72

timbo2410 · 19 Sep 2013 at 11:21

I've had everything disconnected (one by one) until there is just the mobo and PSU and the result is the same. I press start button and for a second or two I have power to all case fans, video card fan, PSU fan and I get one orange and one green light on the mobo (next to the main power supply plug) and the "CLR CMOS" light on the rear reset button. Then the fans stop but the lights remain on.

timbo2410 · 19 Sep 2013 at 11:22

oh forgot to say. All pins, connectors switches ram etc have been unplugged and replugged to make sure they are on ..

Halestorm · 19 Sep 2013 at 11:28

test the PSU by doing the paper clip trick, if it doesnt spin up properly then its a PSU fault

timbo2410 · 19 Sep 2013 at 11:39

ok will give it a go :-)

mickyflinn · 19 Sep 2013 at 11:42

Halestorm said:
test the PSU by doing the paper clip trick, if it doesnt spin up properly then its a PSU fault

Add a fan while testing the psu and make sure that spins as well, that will indicate you have power going out.

timbo2410 · 19 Sep 2013 at 12:06

bingo ... PSU hooked up as you said and I get a second or two with the PSU fan and the one case fan running and then it shuts off ... so it's the PSU then :mad:

timbo2410 · 19 Sep 2013 at 12:13

just tried it with a different fan in case the fan was faulty .. same result ... just checked up the warranty and they have a 7 year warranty