New homebuilt computer shuts down after a few seconds

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Q

Quantage

Honorable
Nov 4, 2013
6
0
10,510
Hi,

Need some help with getting a new computer to work, as I can't seem to find the problem. When I turn it on, the fans start spinning slowly. In the next couple of seconds they really speed up to about maximum before the whole computer shuts down.

This is a new computer, so haven't done anything on it yet (no software., no bios settings, no OS etc.) Have tried to remove one of the ram, GPU, disconnect cpu fan etc. but the problem persists. However, when I only had PSU, motherboard and CPU without the fan connected (no HDD, no ram, no gpu), the psu fan would run for at least 20 seconds.

I have plugged in both the 24 pin main atx and the 4 pin. Tried to start it with only the 24 pin, and the result was pretty much the same as when both of them were plugged in - it ran for 2-3 seconds before stopping.

I've went through most of this thread, but with little luck so far. Going to check for wires/screws behind the motherboard and starting the computer with motherboard outside of the case. Would be really glad for any other possible solutions that i could check into tomorrow.

Thanks in advance! :)

Edit:
Components:

Intel® LGA1150 Core i5-4440
Kingston DDR3 HyperX 1600MHz 8GB (2x4GB)
Corsair CX 600M, 600W PSU
EVGA GeForce GTX 660
MSI B85M-E45, Socket-1150
Fractal R2 Midi

Reusing a WD HDD (not sure what model) and cd drive
 
Solution
bigshootr8
Yea, if you have recently purchased the items you should still be fine. I would say that if anything you could say that the items were DOA dead on arrival.

Couple of tips I'd share

1. Don't over tighten the strews on the motherboard. This can crack the board.
2. Be patient
3. Try and ground yourself either by touching the metal on your case or use a ESD wrist band.
4. Make sure you didn't overdue the thermal paste.
5. Perhaps initially start off without the GPU just to get to Post.
6. Check your motherboard that the CMOS reset isn't set to reset (check your manual in where its located) may be holding you from post.
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Q

Quantage

Honorable
Nov 4, 2013
6
0
10,510


Yeah, tried to start it without any ram and with only one ram stick yesterday. Same result - fans start spinning then there's no power. It sounds/looks like the power just get cut after 2-3 seconds, but i'm pretty sure all the cables are connected at the right places (like the 4-pin next to the cpu etc.) and everything seems to be properly seated.
 
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bigshootr8

bigshootr8

Splendid
Mar 28, 2011
6,708
0
26,460
I'm at a bit of a loss perhaps its a usb issue do you have many things connected perhaps try unplugging what you can and just plug in what you need I'm not entirely sure it should boot unless something is wrong hard ware wise via cpu/mobo/ram
 
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Q

Quantage

Honorable
Nov 4, 2013
6
0
10,510
I've just taken everything apart, and I*m about to build the whole computer over again following the guide closely. However, I'm afraid that something broke during the shipment or when I built it yesterday. I don't have any other computers to test my parts on, so would be really difficult to know what part is actually broken and would need a replacement.. Crossing my fingers that it starts when I'm done
 
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bigshootr8

bigshootr8

Splendid
Mar 28, 2011
6,708
0
26,460
Yea, if you have recently purchased the items you should still be fine. I would say that if anything you could say that the items were DOA dead on arrival.

Couple of tips I'd share

1. Don't over tighten the strews on the motherboard. This can crack the board.
2. Be patient
3. Try and ground yourself either by touching the metal on your case or use a ESD wrist band.
4. Make sure you didn't overdue the thermal paste.
5. Perhaps initially start off without the GPU just to get to Post.
6. Check your motherboard that the CMOS reset isn't set to reset (check your manual in where its located) may be holding you from post.
 
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Solution
Q

Quantage

Honorable
Nov 4, 2013
6
0
10,510


Yeah, sorry for the late reply. Got it all sorted out, however I ended up with 2 opened motherboards. There wasn't actually a problem with the first one. (both of them opened, nothing wrong with either one, so can't send any of them in return). The reason I ordered a new one was because I used a lot of force when I built the computer and was a little unwary as to prevent static shock/electricity. When it didn't work, I figured that if any part was faulty it had to be the motherboard.

After I received the new motherboard, I discovered that the problem was related to the wiring which is part of the case. The cable (power button to motherboard) inside the case wasn't properly seated under the power button, so whenever I pressed the power button down, it would lock itself in a "hold to shutdown"-state.. So I could turn it on, but without it being visible, the cable inside the case was locked in that "pushed down" position - so it turned itself off after 2-3 seconds.

Thanks for all the help :)
 
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bigshootr8

bigshootr8

Splendid
Mar 28, 2011
6,708
0
26,460


Hmm that definitely sucks I'm sorry to hear that. In the future what you may want to do is get a motherboard with a power button for testing purposes. Sucks that your case was stopping you from posting :X

MSI_Z87-GD65_03.jpg
 
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Q

Quantage

Honorable
Nov 4, 2013
6
0
10,510


Yeah, that would have saved quite some time. However, I learned alot from troubleshooting etc. that I otherwise wouldn't have learned if it worked perfectly the first time I tried to start it.
 
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bigshootr8

bigshootr8

Splendid
Mar 28, 2011
6,708
0
26,460


Yes, that is quite true as well good work had slipped my mind that could be a possibility enjoy your new build sir!
 
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