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My motherboard powers up, but my rig won't boot!

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June 15, 2013 11:28:04 AM

Hello everyone! I'm new here. I signed up because i have a somewhat troubling issue. I built my computed during the whole night, following multiple video tutorial instructions. the next morning, when i woke up, I tried to turn it on for the first time, but nothing. I realised that i didn't turn on my monitor!
So i turned it on. And still the same reaction... When I turn on the PSU (seasonic 620w), my motherboard's (gigabyte z77x-ud3h) little power logo lights up, but when I hit the power button of my case (fractal design r4) nothing displays on my monitor! Please help!

More about : motherboard powers rig boot

a c 133 ) Power supply
a c 171 V Motherboard
June 15, 2013 11:41:11 AM

Please list all the components in your build. Then please proceed to answering the following two preliminary check questions:

1. Is the 24-pin motherboard power connector plugged in properly?
2. Is the 8-pin CPU power connector plugged in properly?
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a b ) Power supply
a b V Motherboard
June 15, 2013 11:43:13 AM

System specs please, did you load the motherboard disk drivers if on windows-7
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Related resources
June 15, 2013 11:50:27 AM

cpu:intel i5 3570k
cpu cooler:cooler master 212 evo
mobo:gigabyte z77x-ud3h
ram:corsair vengeance lp 8gb 1600mhz
hdd:wd caviar black 1tb
gpu:msi twin frozr III 7950
case:fractal design r4
psu:seasonic 620w
optical drive:asus something
os:win7 home premium 64bit
monitor: some lenovo monitor
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June 15, 2013 12:00:43 PM

i also have no idea what an 8pin cpu power connector is :/ 
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June 15, 2013 12:06:10 PM

i am positive that both are plugged in correctly
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a b ) Power supply
a b V Motherboard
June 15, 2013 12:13:02 PM

Did you load the mobo disk? Do any fans spin? plug in a speaker any beeps?
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a c 133 ) Power supply
a c 171 V Motherboard
June 15, 2013 12:14:54 PM

Did you plug the monitor to the GPU or motherboard?
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June 15, 2013 12:27:32 PM

the mobo disk?
absolutely NO fans spin.
no bleeps :( 
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June 15, 2013 12:28:05 PM

i didn't plug the monitor to the gpu but i did to the mobo
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June 15, 2013 1:05:04 PM

what if... my psu was defective! it's what this technique is telling me ...
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a c 133 ) Power supply
a c 171 V Motherboard
June 15, 2013 1:08:22 PM

Remove the GPU and try again. It's really recommended to test with a very minimal configuration -- power supply, motherboard, CPU, and one DIMM of RAM. Nothing else should be hooked up. Double check to make sure. If you are not sure, then detach all components and start building it back up from scratch up to those four components. Then stop and test.
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a b ) Power supply
a b V Motherboard
June 15, 2013 1:09:05 PM

nathanthe1rst said:
i didn't plug the monitor to the gpu but i did to the mobo


The monitor needs to be plugged into the GPU.

or try without the GPU like the other poster said.
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a b ) Power supply
a b V Motherboard
June 15, 2013 1:09:48 PM

Did it pass, Green & any black? if not it's DOA unit. Check into RMA the psu.
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June 15, 2013 1:27:37 PM

ur6beersaway said:
Did it pass, Green & any black? if not it's DOA unit. Check into RMA the psu.


i don't understand?
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a b ) Power supply
a b V Motherboard
June 15, 2013 1:33:50 PM

nathanthe1rst said:
ur6beersaway said:
Did it pass, Green & any black? if not it's DOA unit. Check into RMA the psu.


i don't understand?

Please try either without the GPU or with the monitor plugged into the GPU.

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June 15, 2013 1:37:28 PM

i didn't try with the monitor plugged into the gpu, i'll update you in just a sec
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June 15, 2013 1:42:30 PM

monitor only came with one "mobo-to-monitor" cable. do i plug that one into the gpu?
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a b ) Power supply
a b V Motherboard
June 15, 2013 1:46:11 PM

What kind of input does the monitor have? VGA, DVI, HDMI etc?

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June 15, 2013 1:59:19 PM

vga, hdmi and dvi
credits to you all for being patient with such a noob
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a b ) Power supply
a b V Motherboard
June 15, 2013 2:04:43 PM

Any of those will work fine. But VGA may need a DVI<->VGA adapter.

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June 15, 2013 2:09:47 PM

yeah, all i got with my monitor is a vga cable, the monitor, user's guide, and power cable...
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a b ) Power supply
a b V Motherboard
June 15, 2013 2:12:11 PM

Did your GPU come with a VGA to DVI converter?
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a c 133 ) Power supply
a c 171 V Motherboard
June 15, 2013 2:12:25 PM

The GPU should have a DVI port. Connect using DVI. Most monitors also provide a DVI cable.
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June 15, 2013 2:35:25 PM

i tried with the dvi to vga adapter on my gpu. i plugged in the monitor to the gpu, and nothing happened. also, please note i unplugged my monitor from the mobo to do that, since i had no other choice.
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a b ) Power supply
a b V Motherboard
June 15, 2013 2:38:59 PM

Ok can you try plugging it into the motherboard with the GPU out of the system?
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June 15, 2013 2:47:05 PM

sure, i'll try and keep you updated
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June 15, 2013 3:02:31 PM

uhm, well that's weird. all the fans and LEDs went on for a 10 second interval, then off for 5 secs, then on, then off, then on, then off, then on, and then off. that's weird...
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a b ) Power supply
a b V Motherboard
June 15, 2013 3:11:29 PM

Your motherboard is "shorted " against your case. Check your standoffs
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June 15, 2013 3:13:34 PM

oh, i only put 8 out of 9 standoff screws. is that a problem?
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June 15, 2013 3:35:19 PM

guys, if i leave 1 screw over, will it affect me?
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!