Computer will not power on. Led light turns green when power is plugged in.

mattmsk005 · Apr 27, 2018

So i bought a new PSU and tried setting it up but realized that the new PSU was missing the PSIE pin for my GPU, so i tried setting up the old PSU again however now my computer wont power on. I have provided pictures of what my computer looks like right now and when it was working. I tried replugging everything and taking out the gpu and trying with out it.

Before: https://imgur.com/a/Ojdj4av

Now: https://imgur.com/a/EUWjdx9

Intel Core i5-4670K NVIDIA GeForce GTX 780 Asus Z87-A G.Skill 8GB

QwerkyPengwen · Apr 27, 2018

ok, so assuming with this old PSU things don't work even without the GPU plugged into the PCIe slot on the baord then you may have not plugged everything in properly. Make sure the 28pin connector is firmly plugged in, and I mean FIRMLY since even the slightlest of unplug will result in nothing working, and also make sure the PCIe connectors for CPU are plugged in as well firmly.

As for getting the new PSU to work, you say it has no PCIe connectors for the GPU, then that means you need to remove the GPU to get it to boot since it will always try to boot with the GPU when it's plugged into the motherboard and since it has no power from the PCIe cables that don't exist it won't show any image on the monitor.

Also, with the older PSU, try flipping the power switch on it to off then pressing the power button on PC once to get it to power cycle the remaining juice, then press and hold the power button for 30 seconds to drain the system of any residual energy then flip the switch and try to turn it back on.

mattmsk005 · Apr 27, 2018

QwerkyPengwen :

I have not tried anything with the new PSU but i did attempt all the steps you provided for the old ones. Did you check the pictures does everything seem right. Im pretty sure i put everything the right spot but i'm not an expert.

QwerkyPengwen · Apr 27, 2018

to be honest, your pictures are bad. they are too close up and don't show everything cleanly enough. I couldn't see if there was even a cable going into the CPU power on the motherboard

Try taking a better picture or few better pictures detailing areas of the board. Like a full pic that shows the whole thing then close ups of the four quadrants inside:
Top left
Top right
Bottom left
Bottom right
You can then upload them to any pic hosting site and put the links here

mattmsk005 · Apr 27, 2018

QwerkyPengwen :

I added some more pictures https://imgur.com/a/pKoVc4j

QwerkyPengwen · Apr 27, 2018

From what I can tell, everything is plugged in right. can you try with the new PSU without the GPU inside the PC since you say you don't have cables for it with that PSU

mattmsk005 · Apr 27, 2018

QwerkyPengwen :

Ok so i was able to get it to power back on the "power sw" and "reset sw" cables were not plugged in. And i got the proper cables for the new PSU however now my monitor isn't getting any signal at all. https://imgur.com/a/KKujX9S

QwerkyPengwen · Apr 27, 2018

try to boot into the BIOS with just integrated graphics first by removing the GPU and plugging the video cable into the appropriate port on the motherboard.

mattmsk005 · Apr 27, 2018

QwerkyPengwen :

Tried that did not work.

QwerkyPengwen · Apr 27, 2018

double check that the power cables for the motherboard and cpu are firmly in place. it's ok if your board flexes while you push it down, motherboards are sturdier than a lot of people think and can handle it.

mattmsk005 · Apr 27, 2018

They're definitely both in. I currently have PSU cables connected to the gpu, cpu, motherboard. Am i missing some important ones that would cause the monitor to not turn on?

QwerkyPengwen · Apr 28, 2018

well not all monitors turn on by themselves. If you are simply referring to how you are getting no video output from the system then ok.
But just in case, your monitor is plugged into power and you have tried pushing the power button on it to make sure it is turned on right?

mattmsk005 · Apr 28, 2018

QwerkyPengwen :

Monitor is definitely on. Ive also tried on another monitor to make sure the original wasent defective.

QwerkyPengwen · Apr 30, 2018

well I'm not really sure what's happening. It could be a multitude of things from a bad motherboard to maybe just some bad RAM or a bad CPU. Who knows. Also, I'm surprised no one else has come in here offering their insight. And usually there's at least one other person who in these threads who will know something.

Hmm... do you live in america or europe?
From what I understand, PSU's have this little switch on them sometimes right next to the power switch that is for switching between power modes for NA or EU power grids. so if you're in NA you should be on the 110/115 setting and if you're in EU (like England) you should be set to the 220/230 setting.

But before changing anything around, you should take a look at this article and follow the link within to check that what setting you should be on.
https://www.lifewire.com/power-supply-voltage-switch-2625973

mattmsk005 · Apr 30, 2018

QwerkyPengwen :

well I'm not really sure what's happening. It could be a multitude of things from a bad motherboard to maybe just some bad RAM or a bad CPU. Who knows. Also, I'm surprised no one else has come in here offering their insight. And usually there's at least one other person who in these threads who will know something.

Hmm... do you live in america or europe?
From what I understand, PSU's have this little switch on them sometimes right next to the power switch that is for switching between power modes for NA or EU power grids. so if you're in NA you should be on the 110/115 setting and if you're in EU (like England) you should be set to the 220/230 setting.

But before changing anything around, you should take a look at this article and follow the link within to check that what setting you should be on.
https://www.lifewire.com/power-supply-voltage-switch-2625973

Im in America. There is no switch that i can see.

gingerrankin · Apr 30, 2018

Re-check the 8-pin cable that goes to the motherboard. Sometimes it can be reversed and it does not work. Make sure it is positioned in the correct direction.
Does the CPU fan work? Make sure it is connected to the "fan cpu" connector and not to another fan connector.

gingerrankin · Apr 30, 2018

Make sure that the "System panel connector" (cable from chassis to motherboard) is connected correctly. This involves several cables (power sw reservoir sw hd led ...) that connect to a 20-pin connector. (see page 1-39 of the instruction manual).

http://dlcdnet.asus.com/pub/ASUS/mb/LGA1150/Z87-A/E7828_Z87-A.pdf?_ga=2.149828150.1632120931.1524967890-1366718432.1522420141

Update: Also look at page 1-28 for explanation of "post state LEDs" and say if any of them is on.

mattmsk005 · Apr 30, 2018

gingerrankin :

I made sure the 8-pin cable was positioned correctly. And the cpu fan does work and is connected to "fan cpu"

mattmsk005 · Apr 30, 2018

gingerrankin :

It appears that i have it all connected correctly.

gingerrankin · May 1, 2018

Is any "post state LEDs" on or blinkking?

At system panel connector there are 4pin for connecting a "system speaking"like the link below:

https://www.amazon.com/SoundOriginal-Motherboard-Internal-Speaker-Buzzer/dp/B01DM56TFY/ref=sr_1_2_sspa?ie=UTF8&qid=1525152917&sr=8-2-spons&keywords=motherboard+speaker&psc=1

Is a mini-speaker connected like the link?
normally mobo perform certain beeps for warnings in the boot. this can give a clue to the problem.

I do not know the different types of beep that the mobo asus give, but surely someone will know.

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