Solved New Build: Restarts instead of Shuts down

[outsidetown]

I've checked all the wires a thousand times (i had put them in wrong when I first made it so carefully redid it then )

Could it be anything in the case wiring itself?

Pretty convinced it's the PSU now though. Someone I asked said something about power going to the reset switch when it shouldn't be, but I wouldn't know where to start fixing that...

 

[badger906]

well to determine if its the case or not, unplug all of the case cables, and then manually touch the 2 power pins together with something metal. dont worry you wont get a shock.

then shut down the pc as planned. if it shuts down fine, then its a case issue, if it doesnt then its not the case so you can plug the all back in.

 

[outsidetown]

Well, it's not a case issue!

I'll try to nick a psu off somewhere tomorrow and try that. This problem's getting on my nerves now. It's annoying because it's so trivial!

 

[PaulSoebekti]

I don't think it's your power supply. If it was, it would shut off and on randomly (not on demand).

This sounds like the power shut-off micro-switch (on the mobo) is a configured 'the opposite way' than what the designer of the computer case had in mind. Typically, a 'normally closed' switch as opposed to a 'normally open' switch.

I would refer to the manual that came with mobo - and find out what the 'normal position' of the mobo's power switch is. If this information isn't on the manual, try this: disconnect the power leads from the mother board (usually, two thin color-coded twisted leads with a plastic connector at the end). Turn on computer, and turn off from Start menu. Computer is NOT supposed to turn off (because of disconnected switch leads) - but it should not restart either. If this is happening, than we know where the problem lies (= incompatible switch configuration).

Could you give this a try?

Regards,
Paul

 

[Britton30]

yeah but if the power switch was connected to the reset pins it would just turn into a reset button.

if you were to touch the 2 reset pins together when the computer is off it will do nothing. Like i said reset or power, both are just simple switches, the only difference is what we use them for.

And that wouldnt account for the fans still spinning.

My point exactly. Both switches are identical except for size and placement. OP said it restarted immediately after holding the power button in, that's exactly how Reset works, so if it's connected improperly it would do that. During reset the fans, lights, etc stay on. Of course if the PC is already off, reset does nothing.

EDIT, I have misread the 1st post, disregard anything I wrote.

 

[outsidetown]

I don't think it's your power supply. If it was, it would shut off and on randomly (not on demand).

This sounds like the power shut-off micro-switch (on the mobo) is a configured 'the opposite way' than what the designer of the computer case had in mind. Typically, a 'normally closed' switch as opposed to a 'normally open' switch.

I would refer to the manual that came with mobo - and find out what the 'normal position' of the mobo's power switch is. If this information isn't on the manual, try this: disconnect the power leads from the mother board (usually, two thin color-coded twisted leads with a plastic connector at the end). Turn on computer, and turn off from Start menu. Computer is NOT supposed to turn off (because of disconnected switch leads) - but it should not restart either. If this is happening, than we know where the problem lies (= incompatible switch configuration).

Could you give this a try?

Regards,
Paul

Thanks for the advice, I can't find the information in my manual. Here's the page for my mobo if that's any help GIGABYTE - Motherboard - Socket 1155 - GA-Z68MA-D2H-B3 (rev. 1.0)

Badger906 suggested I start the machine with no power leads attached and the result was no different, the computer reset (and I couldn't turn it off without yanking the PSU cable out of the back!)

So you think this may be a case/mobo incompatibility problem? Interesting...

 

[Golden]

Hi,

The build I did this past weekend was with exactly the same motherboard and an Antec 100 case : I connected up exactly as the manual suggested without any problem. What case is this?

Regards,
Golden

 

[outsidetown]

It's a Fractal Design Core 1000.

Well, I finally tested a different PSU and it solved the problem! I'm glad it's not the motherboard, at least.

Thanks for all your help everyone, really appreciate it.

 

[badger906]

woo! im doing my happy badger dance now sorry i like to get a little smug when i hit the nail on the head

 

[PaulSoebekti]

Glad you had it licked!!
Enjoy test driving the new computer!

Paul

 

[outsidetown]

Well, an update!

I sent the PSU back for RMA and haven't hears anything yet. In the meantime I can't be without the PC so I bought a new one as well.

I bought the same model because I got a good deal...

Plugged it in today, SAME PROBLEM! OCZ, you're really not impressing me here!

 

[badger906]

Well maybe its not a fault and just an incompatibility issue. The voltage drop required to signal the motherboard to turn off might be say 0.05v more than normal PSUs or something.

Personally I'd only ever get corsair or coolermaster power supplies

Sent from my BlackBerry 9900 using Tapatalk

 

[PaulSoebekti]

A 'problem' with PSUs usually results in random shut downs. In window's lingo, this is classified as a 'system failure'.
When a system failure occurs, the default in windows is to "Restart". So, if we change that default command for the system to stay off - we would know why it Restarts.

Click 'Start' - Right click on 'Computer' and open 'Properties'.
Click on 'Advanced system settings', look in the last pane (Startup and Recovery) and click on 'Settings ...'
In the 'System failure' pane - clear the Automatically restart checkmark. Shut down computer. Does it stay off?
If it does, we have to find out from the system's log - what it considers a system failure.

Secondly, were you in the process of updating win7 (online) when shutdown and restart occured?

Paul