new sandy bridge build wont turn on no matter what...

supergt · 11 Jan 2011 at 19:53

Hey guys, so I built my new rig and everything seemed to go fine.. Then when it was time to switch it on nothing happened... I've spent over an hour trying everything and nothing will turn it on, so I'm not sure what I can be... The spec is follows

Case: haf x
Mobo: asus p87 PRO (I think that's the name of it sandy bridge one)
Cpu: i7 2600k
Corsair h50 with 2 akasa vipers
8gb ddr3 corsair vengeance ram
ati 6950
PSU: corsair hx 750watt

So I've plugged both power from the psu into the mobo.. And I've followed the asus book in plugging in the power switch.

But nothing.. I've tried unplugging and replugging.. Unplugged everything but mobo and still nothing! It refuses to turn on and I'm not sure what to do..

DragonQ · 11 Jan 2011 at 19:58

Plugged it in?

fini · 11 Jan 2011 at 20:01

Do you have a power-cut at the moment?

VaderDSL · 11 Jan 2011 at 20:01

I've done it many times, but the switch on the PSU has been flipped yes? The mobo is screwed into the brass standoffs as well? Maybe something is shorting somewhere?

unp|dissy · 11 Jan 2011 at 20:01

Power switch flicked on psu?

Greg0986 · 11 Jan 2011 at 20:01

Edit: Beaten to it

Ginger-Menace · 11 Jan 2011 at 20:01

i know its a daft question but have you switched the switch on the psu?

you all beat me to it! grr

supergt · 11 Jan 2011 at 20:06

yess yess yess ive switched it both directions like 500 times and still nothing! is there anyway to rule out the motherboard as being the problem? i think i saw the green light on for a second if that makes a difference.. but cant get it back

VaderDSL · 11 Jan 2011 at 20:07

The motherboard is definitely screwed into the standoffs and not directly into the mobo tray? Prob a daft Q.

Dano · 11 Jan 2011 at 20:07

Tried a different psu cable to rule out the fuse in the plug?

supergt · 11 Jan 2011 at 20:08

yep, i can take it out of the case and try and power it externally?

adbp1 · 11 Jan 2011 at 20:08

check the fuse?

annyoing as it sounds but put it all back to old parts and test psu. rule out psu isnt blown.

supergt · 11 Jan 2011 at 20:08

Dano said:
Tried a different psu cable to rule out the fuse in the plug?

you mean the actual AC cable? i can try my monitors one... but the psu was just opened brand new

VaderDSL · 11 Jan 2011 at 20:09

Yeah might be the next step, and I'd probably unplug everything power related and leave it for a good half hour etc. then try again externally.

RJC · 11 Jan 2011 at 20:09

Remove the PSU and link out pins 13 & 14 on the main ATX (green & black cables) connector and have a fan connected to a molex and see if the PSU starts.

supergt · 11 Jan 2011 at 20:10

alright, i know its astupid question but is it possible that if i plugged in the pwr led, pwr switch etc wrong even though ive plugged it in the given slots? (i think)

supergt · 11 Jan 2011 at 20:10

RJC said:
Remove the PSU and link out pins 13 & 14 on the main ATX (green & black cables) connector and have a fan connected to a molex and see if the PSU starts.

how do i link out the pins?

RJC · 11 Jan 2011 at 20:25

supergt said:
how do i link out the pins?

Paper clip or a price of wire.

Dano · 11 Jan 2011 at 21:10

supergt said:
alright, i know its astupid question but is it possible that if i plugged in the pwr led, pwr switch etc wrong even though ive plugged it in the given slots? (i think)

This would defintely cause it, the power switch needs to be correctly connected for it to work, polarity doesn't matter but it does need to be connected to the correct header.

NVid'did'it · 11 Jan 2011 at 21:20

^^ I've had this problem and power buttons in correct headers solved my problem. Check them Op.