System will not power on (I have tried just about everything)

foodmarket · Apr 26, 2017

Hi everyone this is my third thread about this issue. The last two post got a few good tips and I tried every one of them and more, yet I still can't get this new system to power on. So what happens is when I flick on the PSU the motherboard LED's and case power button LED lights up, but when I press in the power button (as well as hold) nothing happens.

Picture of finished build: http://imgur.com/tLFKUB9

To begin, I am an experienced builder who builds PC's for friends and family. My most recent build refused to boot and I thought nothing of it, I simply went over the checklist listed on here and after attempting every task aside from booting outside of the case I still couldn't get the system to power on. Quickly let me give you a run-down of what I've done, I have tried booting with no GPU, tried booting with 1 and 2 sticks of RAM. I tested a fresh PSU that I had and still wouldn't power on, I have sent back the motherboard and received a fresh new one... and nothing. I have inserted the CPU into another computer and that other computer boots on just fine. I have also tried to short the power-on pins directly as maybe the case button doesn't want to work. The only things I have not touched at all are the hard drives, everything else have been checked and confirmed. The case comes pre-installed with stand off screws and all cables are connected properly, I can even provide photos if they will help.

Please all I ask is someone help me fix this, I have been working on this PC for a week now and it is very irritating.

Also the specs:

Case: NZXT S340
MB: MSI Z270 Gaming Pro
GPU: MSI RX 480 4GB
CPU: i5 7600k
Cooler: 212 Evo (LED version)
Storage: 3tb Seagate and 250gb 850 evo
RAM: 16gb Corsair LPX
PSU: 650w corsair M

Also a internal wireless network card, and whats odd is the 7000 series cpu boots in my z170 board but not the z270 board, could that be an issue?

RaDiKaL_ · Apr 26, 2017

"after attempting every task aside from booting outside of the case"

Try to breadboard the mobo, getting lights on the mobo and no boot is often a shorting issue.

James Mason · Apr 26, 2017

I would try booting it out of the case. And while it's out double check the preinstalled motherboard stand offs, to make sure none are "extra" for your motherboard (and causing a short)

Also maybe provide us some good pictures of how you have everything hooked up?

foodmarket · Apr 26, 2017

RaDiKaL_ :

but what could it be shorting on? it has no contact with any loose screws, cables or so on and has been taken and replaced in the case over 4 times now. I'll give it a shot I suppose though thank you for the advice.

foodmarket · Apr 26, 2017

James Mason :

Standoffs look to be ok but I will try booting out of the case tomorrow. I have been working all day so just plan on relaxing for the rest of the night. Thank you in advance for the advice!

Edit: I've provided a photo of the finished build if that helps. If you'd like I can take others I'm just not sure what you'd like to see in particular.

adiec · Apr 26, 2017

that graphics card in correctly ? looks like it is on an angle .

foodmarket · Apr 26, 2017

adiec :

yeah there is some massive slant with this card/board it seems. But yes it is in properly

James Mason · Apr 27, 2017

You didn't connect the front panel headers.
Very bottom of the board, near the PSU in the middle, there's a set of pins labeled JFP1.
Page 34 of your MB manual.

foodmarket · Apr 27, 2017

James Mason :

I'm fairly certain they are connected, on this board the JFP1 pins are located to the right of the M.2 drive

adiec · Apr 28, 2017

foodmarket :

definitely in the picture you have taken they are connected to the wrong pins according to the manual .

James Mason · Apr 28, 2017

foodmarket :

I'm not sure what you plugged them into, but it doesn't look like what your motherboard manual says is there, and your picture isn't clear enough for me to read the actual labels on the mobo:

adiec · Apr 28, 2017

James Mason :

foodmarket :

I'm not sure what you plugged them into, but it doesn't look like what your motherboard manual says is there, and your picture isn't clear enough for me to read the actual labels on the mobo:

i don't actually think it is labelled.. or at least not underneath the pins . hope it has not caused any damage .

James Mason · Apr 28, 2017

adiec :

We'll find out once you hook it up correctly. what you plugged it into isn't listed in the manual, but everthing else appears to be in the right order based on what the manual says should be there.

adiec · Apr 28, 2017

James Mason :

i'm not the OP . i am also trying to help him/her

i found this image.. my eyes are not so good though!

http://home.coolpc.com.tw/gtchen/msi/mb/z270_gaming_pro_carbon/coolpc-z270-gaming-pro-carbon-04.jpg

edit: if you click on the image it allows you to zoom in and the label for those pins is on there .

adiec · Apr 28, 2017

i can see what the OP has done. the label for those pins JSP and i am not sure if it is a 11 or two tiny markings on the board . (looked at it a million times now ! ) .. he/she must have confused that with JFP1

foodmarket · Apr 28, 2017

James Mason :

Excuse my language but I shit you the fuck not that those pins looked like they were labeled JFP1 and on top of that my case LEDS were lit up when plugged into them. But yes alas they were actually not the JFP1 pins and I fucked up big time. Again excuse my language and thank you so much for pointing this out. I've now shamed myself as a PC builder but they are labeled so badly and I fault the company on that (and my not reading manuals) thank you again kind sir. And if it's any correlation I have shit eyes so that might not be helping.

P.S: I also forgot to mention I had the carbon version ;c in the end I was still at fault and thank you again.

adiec · Apr 28, 2017

foodmarket :

i can see why you made the error! don't be ashamed

we all make mistakes .. personally i am just happy that you didn't damage the board . everything is working ok now ?

foodmarket · Apr 28, 2017

adiec :

It seems to be okay, I'm going to install windows and stress test and hopefully all is well. Thank you guys again you really saved me here. I was about to breadboard and then if that failed send the whole thing back. So again thank you a ton!

Also I should have realized something was wrong when I had to force the pins to all fit on those jspi1 pins. It slightly bent one of them but that's nothing that a quick bend back wont fix ;p

System will not power on (I have tried just about everything)

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