New PC build turns itself on.

sswats · 2 Jun 2011 at 17:20

Bought
MSI GD65
Intel i5 2500k.
Corsair Gaming series PSU.
8GB Corsair ram
CM 690II case

Which all arrived today and i put it together (my umpteenth PC build)

Now as soon as i switch the PC on from the PSU on/off button the PC turns itself on.
And when i shut down it just turns itself back on again.

Any ideas on what to check.

Baldbloke · 2 Jun 2011 at 17:28

Possible short on the mb power start up pins. Disconnect the wires leading to the on/off switch at the front of ther case. It will probably not boot when you use the psu switch now. If that is the case, you have a crosswired switch or some sort of short on that switch.

olivier renault · 2 Jun 2011 at 19:08

Could be the power / reset buttons. reseat then and make sure they are not stuck.

fleming222 · 2 Jun 2011 at 19:42

Both of the above. But just incase, check that the power button on the case isn't stuck down.

Baldbloke · 2 Jun 2011 at 20:30

fleming222 said:
Both of the above. But just incase, check that the power button on the case isn't stuck down.

Darn! Those simple answers are always the right answer. But why are the simple answers the last one we think of? One of lifes mysteries.

C'mon OP. We're busting to know the right answer.

sswats · 2 Jun 2011 at 20:37

Forgot to mention that even with all the front switch cables and HDD LED etc all totally unplugged it switches itself on.

Baldbloke · 2 Jun 2011 at 20:42

sswats said:
Forgot to mention that even with all the front switch cables and HDD LED etc all totally unplugged it switches itself on.

Pass.

dandos23 · 2 Jun 2011 at 21:00

Have you tried removing everything that does not need to be in it?

Can you take it out of the case and test it?

spleenharvester · 2 Jun 2011 at 21:01

It's a BIOS setting. Can't remember the name. I had the same issue.

Bit odd it does it after you shut down though, disable all the wake on ____ settings in the BIOS.

Baldbloke · 2 Jun 2011 at 21:04

Yup. On reflection, the computers my firm uses in certain situations are bios configured to power up as soon as it sees mains in.

ahar · 2 Jun 2011 at 21:05

Possibly the wake on LAN stuff going a bit screwy - do ou have the LAN cable connected?

sswats · 2 Jun 2011 at 21:49

LAN is disconnected. I'll play around with the BIOS settings and if that fails I'll ttake the mobo out of the case

Kouba · 2 Jun 2011 at 22:11

Hey mate, I had this exact same issue last year, just remove the CMOS battery, leave it out for a good 10 minutes and then put it back in.

sswats · 2 Jun 2011 at 22:37

Thanks, i'll try that first then. Bit late now I'll work on it tomorrow.

fleming222 · 2 Jun 2011 at 23:30

Hope that sorts it out. If it's not that would it be shorting or just a faulty motherboard?

sswats · 3 Jun 2011 at 10:37

So update.

Unplug Hard drives DVD's and USBs
Change PSU
Try different ram
Try different graphics card
Take out motherboard from the case to check for shorts....

are all steps I managed to avoid thanks to Dirty Blade.

Cheers for that. Worked a charm.

Kouba · 3 Jun 2011 at 21:06

No problem mate, glad it worked for you.