New PC boots for a second, turns off immediately

[CalMorrison]

Hi!

I've been building my second PC over the last few days and finally decided to boot it up to make sure it works. The system turns on for half a second, then immediately shuts off. All fans including the 3 case fans, 2 graphics card fans, and CPU fans run. I've tried unplugging power from everything but the mobo, no such luck.

Parts:
i7 4790k
MSI z97s
GTX 980ti
Corsair 780T full tower
EVGA 850w 80+ Platinum
16gb of HyperX Fure Ram
120gb SSD

Please help! Its very frustrating to know something is wrong. PS. I did not install standoffs for the mobo.

 

[Hlsgsz]

First of all, install the standoffs or just get the card out and onto some cardboard or something, then pray it still works.
Have you intalled the pc speaker? Does it beep?

 

[CalMorrison]

First of all, install the standoffs or just get the card out and onto some cardboard or something, then pray it still works.
Have you intalled the pc speaker? Does it beep?

Are the standoffs necessary? I didn't use any in my first build. Also no it does not beep!

 

[Hlsgsz]

First of all, install the standoffs or just get the card out and onto some cardboard or something, then pray it still works.
Have you intalled the pc speaker? Does it beep?

Are the standoffs necessary? I didn't use any in my first build. Also no it does not beep!

Thay are mandatory. But it's a lottery and you may have been lucky. Get that mobo out and put it on something else or seat it properly before you do any more tests.

 

[CalMorrison]

First of all, install the standoffs or just get the card out and onto some cardboard or something, then pray it still works.
Have you intalled the pc speaker? Does it beep?

Are the standoffs necessary? I didn't use any in my first build. Also no it does not beep!

Thay are mandatory. But it's a lottery and you may have been lucky. Get that mobo out and put it on something else or seat it properly before you do any more tests.

Okay, I will remove it all tomorrow and install the standoffs!

 

[Hlsgsz]

First of all, install the standoffs or just get the card out and onto some cardboard or something, then pray it still works.
Have you intalled the pc speaker? Does it beep?

Are the standoffs necessary? I didn't use any in my first build. Also no it does not beep!

Thay are mandatory. But it's a lottery and you may have been lucky. Get that mobo out and put it on something else or seat it properly before you do any more tests.

Okay, I will remove it all tomorrow and install the standoffs!

Say a quick prayer while you do that. On a serious note, make sure you check the holes on the mobo and put in all standoffs that it requires, but, more importantly, not even one extra. No standoff should touch the mobo where there isn't a hole.

 

[CalMorrison]

First of all, install the standoffs or just get the card out and onto some cardboard or something, then pray it still works.
Have you intalled the pc speaker? Does it beep?

Are the standoffs necessary? I didn't use any in my first build. Also no it does not beep!

Thay are mandatory. But it's a lottery and you may have been lucky. Get that mobo out and put it on something else or seat it properly before you do any more tests.

Okay, I will remove it all tomorrow and install the standoffs!

Say a quick prayer while you do that. On a serious note, make sure you check the holes on the mobo and put in all standoffs that it requires, but, more importantly, not even one extra. No standoff should touch the mobo where there isn't a hole.

So I checked, in my case manual it says I have one motherboard standoff, but there's none in any of the bags of screws. However, I think it came pre installed cause through one of the holes in the motherboard, there was a screw like thing that was attached to the case, that sticks out through one of middle holes. Would that be the standoff?

 

[Hlsgsz]

First of all, install the standoffs or just get the card out and onto some cardboard or something, then pray it still works.
Have you intalled the pc speaker? Does it beep?

Are the standoffs necessary? I didn't use any in my first build. Also no it does not beep!

Thay are mandatory. But it's a lottery and you may have been lucky. Get that mobo out and put it on something else or seat it properly before you do any more tests.

Okay, I will remove it all tomorrow and install the standoffs!

Say a quick prayer while you do that. On a serious note, make sure you check the holes on the mobo and put in all standoffs that it requires, but, more importantly, not even one extra. No standoff should touch the mobo where there isn't a hole.

So I checked, in my case manual it says I have one motherboard standoff, but there's none in any of the bags of screws. However, I think it came pre installed cause through one of the holes in the motherboard, there was a screw like thing that was attached to the case, that sticks out through one of middle holes. Would that be the standoff?

Yes. There should be several. Enough for all the holes in the mobo. they are usually hexagonal things that screw into teh case and can be screwed into through the motherborad.

 

[Hlsgsz]

 

[Hlsgsz]

If these came preinstalled make sure the are in positions and ONLY in positions where there is a hole in the motherboard.

 

[CalMorrison]

First of all, install the standoffs or just get the card out and onto some cardboard or something, then pray it still works.
Have you intalled the pc speaker? Does it beep?

Are the standoffs necessary? I didn't use any in my first build. Also no it does not beep!

Thay are mandatory. But it's a lottery and you may have been lucky. Get that mobo out and put it on something else or seat it properly before you do any more tests.

Okay, I will remove it all tomorrow and install the standoffs!

Say a quick prayer while you do that. On a serious note, make sure you check the holes on the mobo and put in all standoffs that it requires, but, more importantly, not even one extra. No standoff should touch the mobo where there isn't a hole.

So I checked, in my case manual it says I have one motherboard standoff, but there's none in any of the bags of screws. However, I think it came pre installed cause through one of the holes in the motherboard, there was a screw like thing that was attached to the case, that sticks out through one of middle holes. Would that be the standoff?

Yes. There should be several. Enough for all the holes in the mobo. they are usually hexagonal things that screw into teh case and can be screwed into through the motherborad.

My case manual says I have one motherboard standoff but it doesn't seem to be anywhere? Could that be the one built into the case?

 

[Hlsgsz]

they may be pre-screwed into the case, and you need to take out the ones not needed.

 

[CalMorrison]

they may be pre-screwed into the case, and you need to take out the ones not needed.

So when I get home, I should try completely taking apart the PC, and start from scratch, and test just the CPU and mobo and psu?

 

[Hlsgsz]

Yes, this is how one should begin a build: put the motherboard on the box it came in, install the cpu, cooler and ram, then connect the psu, monitor and kb/mouse and short the pins where the power switch from the case would go("PWR SW" or smthn similar) to turn it on. Some mobos have a button for this, but i don;t think its the case with yours. Then if all goes well, one positions the standoffs in the case to cover all the holes in the mobo and removes the rest and continues.

 

[CalMorrison]

Yes, this is how one should begin a build: put the motherboard on the box it came in, install the cpu, cooler and ram, then connect the psu, monitor and kb/mouse and short the pins where the power switch from the case would go("PWR SW" or smthn similar) to turn it on. Some mobos have a button for this, but i don;t think its the case with yours. Then if all goes well, one positions the standoffs in the case to cover all the holes in the mobo and removes the rest and continues.

Thanks for the help! I'll do this soon, and I'll get back to you. Appreciate it!

 

[Hlsgsz]

No probs, man! Good luck!

 

[CalMorrison]

No probs, man! Good luck!

Should I order a bag of standoffs? Because I only have 1 and I don't even know where that one is!

 

[Hlsgsz]

They are probably already screwed in the case. No case comes without them. And if one is missing it's not such a big deal. Just be sure not to have any extras under the mobo.

 

[CalMorrison]

They are probably already screwed in the case. No case comes without them. And if one is missing it's not such a big deal. Just be sure not to have any extras under the mobo.

Right, I will definitely check tonight, is it possible that parts have been damaged from this?

 

[Hlsgsz]

Only the mobo itself. But it's a lottery. I'd say 90% you're alright and its either a benign short(from an extra standoff) or something else entirely.

 

[CalMorrison]

Only the mobo itself. But it's a lottery. I'd say 90% you're alright and its either a benign short(from an extra standoff) or something else entirely.

Great news! The case comes with pre installed standoffs, and they're all over the case, so I assume they're causing a short. I'll take out the mobo now and check to see if there's any extra. How should I go about removing the extras?

 

[CalMorrison]

Only the mobo itself. But it's a lottery. I'd say 90% you're alright and its either a benign short(from an extra standoff) or something else entirely.

So I removed everything, I was wrong, standoffs were all where needed no less no extra, I removed the mobo and put it outside the case so it was only the psu, mobo, CPU, and ram. I made it start by connecting the two prongs and it started and stopped on its own again. I removed the ram and tried again, no luck. Started and stopped immediately. It's only the mobo, psu, and CPU. It's one of those.

 

[CalMorrison]

Solved.
I didn't have the CPU power cord installed. Which was optional in the manual but apparently is necessary. -_-
Thanks for the help!

 

[Hlsgsz]

Solved.
I didn't have the CPU power cord installed. Which was optional in the manual but apparently is necessary. -_-
Thanks for the help!

I'm glad it's all good, man. One more building "tip": both the 4/8 pin cpu power cord and the 24pin ATX mobo cord are NEVER optional.(except maybe in some embedded systems, but that's another story)

 

[CalMorrison]

Solved.
I didn't have the CPU power cord installed. Which was optional in the manual but apparently is necessary. -_-
Thanks for the help!

I'm glad it's all good, man. One more building "tip": both the 4/8 pin cpu power cord and the 24pin ATX mobo cord are NEVER optional.(except maybe in some embedded systems, but that's another story)

I appreciate the help! Also, it was an EVGA mistake I assume cause they put that the CPU power cord was "optional" and "only" required for extreme over clocking and dual CPU. Very misleading. Once again, thanks for the help!