Newly built pc won't turn on

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Clarification Request

Did you try it without?

by r. proffitt Forum moderator Aug 27, 2017 9:21AM PDT

A lot of things. We don't need the ram, GPU or drives for a power up test.

We don't need a case either.

As to connections, we only need one. The Power On connection.

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Yes

by mylancox Aug 27, 2017 9:27AM PDT

I've tried kth only:
Psu, cpu, ram and screen.
No sign of life...

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I'm having to guess what kth is.

by r. proffitt Forum moderator Aug 27, 2017 9:31AM PDT

Keyboard? Tile? Holes? I'm a bad guesser.

OK. when it's this dead I have to pull the PSU and try the Green Wire Test (google that.)

But first I look for extra mounting studs under the motherboard and if there is any jumpers misplaced. The power on button could be non-operational so we use a screwdriver blade or other jumper to be sure it's not something simple.

This usually happens most often on motherboard replacements or when someone build the machine all in one go. Start small, without a case, on cardboard.

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I meant 'with' instead of kth

by mylancox Aug 27, 2017 9:34AM PDT

I've tried to boot on top of the morherboard box. I've also tried another (100% working) psu from another Psu.

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I can usually power up on the motherboard box with

by r. proffitt Forum moderator Aug 27, 2017 9:38AM PDT

3 parts. PSU, motherboard and CPU+HSF. If that fails I'm looking at the bad or misconfigured parts. I use my pen tip (it's metal) to close the power on pins.

No case, just 3 parts and a pen for me.

Post was last edited on August 27, 2017 10:01 AM PDT

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That fails too

by mylancox Aug 27, 2017 9:43AM PDT

I know the cpu is good for sure. I've tried a working PSU... Could it be the PSU power cable? That's the only thing i haven't tried yet.
I guess the MOBO is bad out of the box?

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cpu

by James Denison Aug 27, 2017 10:03AM PDT

you sure the cpu is installed correctly? Lined up the marks?

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Worth a look again.

by r. proffitt Forum moderator Aug 27, 2017 10:15AM PDT

The criteria for the socket is perfection.

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Yes,

by mylancox Aug 27, 2017 10:29AM PDT

The golden triangle is aligned with the one on the cpu :/

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Then time for the last test.

by r. proffitt Forum moderator Aug 27, 2017 10:33AM PDT

Just PSU and motherboard, nothing else on cardboard and the pen tip or what you use OTHER THAN THE POWER BUTTON to call for a power up.

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Motherboard with cpu in it right?

by mylancox Aug 27, 2017 10:39AM PDT

I think I dont understand you completely...

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When I can't get the 3 part test to power up.

by r. proffitt Forum moderator Aug 27, 2017 10:42AM PDT

I go for a 2 part test.

By now I think but am not sure if you got it down to the usual 3 part test.

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So mobo without CPU?

by mylancox Aug 27, 2017 10:44AM PDT

(See title)

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So mob without CPU.

by r. proffitt Forum moderator Aug 28, 2017 7:16AM PDT

Did that work or not? I can't tell if you've been following directions so here's the deal.

You reduce it to smallest number of parts and when that won't power up, it's one of those parts.

Some parts like the PSU have what we call the Green Wire Test (google it) and you need a Volt Meter to really check it out. To test the motherboard you need a good motherboard. One will work, the other won't.

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It gives Some kind of power

by mylancox Aug 28, 2017 7:24AM PDT

The psu gives Some kind of power since the power led of the case lit up... I have tested that witout cpu, still no power going through.
Also no lights on the morherboard...
I still think the problem lays with the mobo or psu...

Could other parts be damaged by a bad psu?
Because Seasonic is a Good psu brand right?

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Could parts be damaged by a bad PSU.

by r. proffitt Forum moderator Aug 28, 2017 7:33AM PDT

Yes.

As to the good psu question, they made millions but that doesn't tell you if the one you have is good or not.

It appears you've done all you can with what you have. A repair counter might be your next move if you can't replace parts.

Post was last edited on August 28, 2017 7:35 AM PDT

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Video if that might help.

by mylancox Aug 29, 2017 12:34PM PDT

https://youtu.be/tySp4uhhXM4

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That cleared a few questions up.

by r. proffitt Forum moderator Aug 29, 2017 1:24PM PDT

But next, turn the phone for a better video.

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There not really much else to show

by mylancox Aug 29, 2017 2:21PM PDT

what else do you need to see?

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That shows us what does not work.

by r. proffitt Forum moderator Aug 29, 2017 2:27PM PDT

You're done to just a few parts and for most only the PSU can be tested on its own (green wire test with any load such as old motherboard you can live with burning out and a Volt meter.)

I see a CPU in the socket so the last possible move is no CPU.

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Done that

by mylancox Aug 29, 2017 2:30PM PDT

Measured the with a multimeter, everything gave the right voltage. Tried Without cpu..
dead mobo?

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Sounds like it.

by r. proffitt Forum moderator Aug 29, 2017 2:32PM PDT

Your video moved off the CPU fan when you used a key to power on so I couldn't see if it twitched. For such videos landscape mode.

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I did not move at all

by mylancox Aug 29, 2017 2:34PM PDT

Done multiple Attempts...

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The youtube shows the camera moved off the fan.

by r. proffitt Forum moderator Aug 29, 2017 2:41PM PDT

Anyhow it did help.

As to the jumper it's "JBAT1: Clear CMOS (Reset BIOS) Jumper" on page 34 of
http://download.msi.com/archive/mnu_exe/E7971v2.2.zip

To check the battery voltage I remove the CR2032 if I can't get a reading from the battery in the board.

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Yeah, ive read that

by mylancox Aug 29, 2017 2:51PM PDT

But there is no physical jumper to place. I've reset Cmos by touching the pins for coue of seconds.. and I removed the battery for Some minutes.
The battery should be 3v like all of this type, right?

- i'm Sure the fan never moved.

Found a similar topic with no solution: https://pcpartpicker.com/forums/topic/229404-new-build-is-my-mobo-dead

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FAN NEVER TWITCHED!

by r. proffitt Forum moderator Aug 29, 2017 3:02PM PDT

That means the motherboard never sent the power on to the PSU (that green wire!)

As to the 3V battery, my criteria is 3.0 and no lower.

-> Looks like the motherboard has a deep issue. Or you are not shorting the right Power On pins.

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Greenwire test was a succes

by mylancox Aug 29, 2017 3:27PM PDT

I've shorted the right pins. Tested psu with multimeter and paperclip. Both worked.
Still wondering How It could be this dead!

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Greenwire test

by r. proffitt Forum moderator Aug 29, 2017 3:32PM PDT

Tests the PSU. It tells us the motherboard never sent the power on signal on the green wire.

I take it that the CPU out test is done so where is your new motherboard to test with?

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Thanks for everything, you're awesome

by mylancox Aug 29, 2017 3:34PM PDT

Im gonna look for an old pc that we dont use anymore tommorow, ill plug the psu into that one.

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Let's repeat a check. What voltage is the CR2032 at?

by r. proffitt Forum moderator Aug 29, 2017 2:33PM PDT

And is the CMOS clear jumper (it can be named differently and I'm not going to pull up the manual just for this one) in the right position?

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