Help, Computer build not working :(

flexifoilrage · 10 Jun 2014 at 20:30

Hello,

This is my first computer i've built and after building it all i've powered it on and the computer turns on for about 2/3 secs then turns off again. It doesn't load long enough to get to a BIOS and i know its working and my 3 fans all start up. I have then taken each component out and ran it with just 1 stick of RAM, processor, motherboard and power supply. Even after doing this is still cuts out after 2secs, i also swapped the RAM stick around but still same problem.

I have included a list of what the spec incase there is a obvious hardware error...

I7 PROCESSOR - http://www.overclockers.co.uk/showproduct.php?prodid=CP-405-IN
GIGABYTE MOTHERBOARD - http://www.overclockers.co.uk/showproduct.php?prodid=MB-401-GI
1TB HARD DRIVE - http://www.overclockers.co.uk/showproduct.php?prodid=HD-257-SE
430W POWER SUPPLY - http://www.overclockers.co.uk/showproduct.php?prodid=CA-059-CS
OPTICAL DRIVE - http://www.overclockers.co.uk/showproduct.php?prodid=CD-136-SA

I only have connected 2 plugs into the motherboard, is that right? the large one and the smaller one. And thats all thats connected to the power supply and it still wont work.

Am i missing something here? I really hope its a simple mistake ive made, if you need anymore information please give me a shout as really want to get it working.

Thanks for reading and hopefully helping.
Jake

flexifoilrage · 10 Jun 2014 at 20:38

digitalx said:
Are there any beeps, long or short and how many?

if possible, test the PSU on another PC.

Try keeping the PSU plugged in for 5 minutes before turning it, to allow the CMOS battery to charge a little, then try again.

Thanks for getting back, there isn't any beeps but i don't think i have a speaker attached to the motherboard and my other computer doesn't have one either so cant snatch one from there.
How would i test the PSU on another computer?

flexifoilrage · 10 Jun 2014 at 20:43

deano-5 said:
Can we have a picture of the board where the wires connect?

Yep let me quickly run down and take one for you.

flexifoilrage · 10 Jun 2014 at 20:47

deano-5 said:
Check its connected

Yes that is connected and starts up when the computer boots but then it all dies

uploading image of it now.

flexifoilrage · 10 Jun 2014 at 20:48

flexifoilrage · 10 Jun 2014 at 20:59

lee32uk said:
Are you using the stock cooler ? or an aftermarket cooler ?

Is it seated correctly ?

If it boots up for a few seconds and you have the 24 pin and 4/8 pin connected then it doesn't sound like a faulty psu (I could be wrong)

You have connected the cpu fan to the motherboard cpu fan header ?

You could always try the paperclip test to rule out the psu.

Same psu as yours

As you can see from this picture it is an aftermarket cooler, this was in my previous comp and worked ok. I have taken it off and there is paste on the processor so there is obviously a connection as i only applied paste to the heat sinks as a test to make sure they did touch. I have checked that the fan is in the correct slot on the motherboard, but i cant believe that its down to a heating issue as its only on for a second or so so i cant believe it would overheat that quickly.

Thanks for the vid i will defo try that, maybe when family are out as i am liable to electrocute something or someone in the process....

flexifoilrage · 10 Jun 2014 at 21:06

Ploppy2k3 said:
does it power up as soon as you turn on the psu / plug the psu in or do you have to press the power button?

It turns on as soon as i plug the power in... could we be onto something

flexifoilrage · 10 Jun 2014 at 21:07

Morfinel said:
Is your switch button correctly plugged and working, I think when you switch pc on and keep pushing the button it will switch Off after few sec, find in manual which two pins are for switching and touch them using screw driver once

I don't fully understand... sorry.

flexifoilrage · 10 Jun 2014 at 21:15

Ploppy2k3 said:
I think your front panel connectors are wrong, mainly the power button. check these again

Ok i will have a look at the documents fro the motherboard and will check my wiring now. Ill get back to you with a update.

flexifoilrage · 10 Jun 2014 at 21:18

Grumpy_Old_Git said:
Also, un plug everything you don't need, so disconnect hard drives, usb headers & cd roms, if you have the original Intel cpu cooler use that also. If you can, also remove it from the case, just incase you have a short.

Ive removed everything, i havent removed the motherboard yet... might be tomorrow's job if i cant get it working now.

flexifoilrage · 10 Jun 2014 at 21:22

Ploppy2k3 said:
if the power button is swapped with an led the issue you describe will happen. not that i have ever done this myself.. ahem....

Theres not a way to swap the led and powerswitch as the leds have a pin in the middle, i have checked and im looking into the orientation of the switch now.

flexifoilrage · 10 Jun 2014 at 21:24

Ploppy2k3 said:
actually you could just remove the front panel connectors and then turn the PSU on. if it stays off then odds are the panel connectors are wrong

That was a good shout, just tried that removed all the front panel wires and still same problem, it boots for about 2 seconds the off again

flexifoilrage · 10 Jun 2014 at 21:31

Grumpy_Old_Git said:
do this, unplug you panel switch wire, bat the one marked power, and see if it turns on.

Also remove the board, you may have a post that's touching the board base, I notice 1 fixing hole, does not have a screw.

I have removed all the front panel plugs and still doesnt load. Yes your right there is one screw hole without anything in as there isnt a whole for it on the case. would this affect the computer booting? There is already 6 screws holding it in.

flexifoilrage · 10 Jun 2014 at 21:40

Ploppy2k3 said:
"I have removed all the front panel plugs and still doesnt load. " still the same or any different?

as for the screws it shouldn't matter but grounding can be weird

No same thing, loads for about 2 secs then off, i have just done the paperclip test on the PSU and it works so thats no faulty. And i have checked and double checked the front panels

flexifoilrage · 10 Jun 2014 at 21:49

Grumpy_Old_Git said:
ok, a really stupid question, did you remove the plastic paper from the cpu cooler, before installing it. Sorry if it seams a bad question, but I have seem that mistake a few times with AMD chips.

Erm not sure what paper you mean but i have had it working on a computer before so i wouldn't say it was that causing the problem.

flexifoilrage · 10 Jun 2014 at 21:56

Grumpy_Old_Git said:
Can you please list the memory module part number ? was this from an older build. I see it not listed in you parts from OC

http://www.gskill.com/en/product/f3-1600c9d-8gao

flexifoilrage · 10 Jun 2014 at 22:06

wazza300 said:
do you have any other memory to try? could be that also

I could take 2 sticks out my other computer, Ill try that now

flexifoilrage · 10 Jun 2014 at 22:11

Ok yes i do have 2 and even wiht just one or 2 same thing happens, and i have just changed the RAM with 2 sticks which 100% work and still same thing, boots for about 2 seconds then off again. Dont know if this is linked but the power button on the case doesnt work.

flexifoilrage · 10 Jun 2014 at 22:17

wazza300 said:
swap over the cases power/reset wires on the motherboard then start pc with the cases reset button (then you can rule that out)

Ok tried that, no reaction from it

flexifoilrage · 10 Jun 2014 at 22:20

azibux1 said:
Try shorting the power jumpers with a screwdriver

How do you know the switch doesn't work, surely you haven't had a chance to get to that point to test it as it powers on instantly?

EDIT: What wazza suggested would also work

Power jumpers? where are they located? And it does turn on as soon as i put the plug in and swtich it to on on the PSU but after it shuts down if i press the power button nothiing, but if i shot the CMOS then it powers up.