Newly built pc won't turn on

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johnreydegamo

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Dec 21, 2014
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No signs of start up. I tried the paper-clip test on my PSU and the PSU starts but when I reconnect it on the motherboard, nothing happens.
 
Solution
androbourne
Right. But what about the power leads from case to mobo? Have you tried to bypass your cases power button and hitting the leads together on the mobo to kick off the power switch?

Paperclip test on PSU doesn't always work. You want the motherboard to give the signal for power first. Do it using the power switch leads on the mobo instead, see if that makes a difference.

Did you also do as I suggested and removed the extra devices such as GPU from your rig and see if it powers on?
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johnreydegamo

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Mobo - MSI Mortar Arctic b350m
AMD Ryzen 7 1700
GTX 1060 Palit dual-fan
Seasonic m12ii 520 watts
 
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johnreydegamo

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THose connectors are both connected. I already tried the paper clip test for my PSU, the fan spins. When I reconnected it on the motherboard, nothing happened. Is the motherboard the source of the problem?
 
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androbourne

androbourne

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Jul 18, 2017
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Are you sure the power button connectors and so on are actually connected to the motherboard properly?

http://www.alphr.com/features/378919/how-to-fit-the-internal-cables

Also, most motherboards require something like a 4x or 6x connector for CPU power and also the main ATX power. Are they both connected? Did you use the correct 4x/6x for the CPU? You can't just plug any old plug in there. The PSU will have one specifically for that plug. If you plug in the wrong one, you can fry the port and damage the motherboard.

If everything looks correct. Have you removed all extra devices from the case and tried to boot? Such as GPU? If your PSU is not rated high enough for the GPU power, things like this happens.
 
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gdmaclew

gdmaclew

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That's correct. that motherboard requires an 8-pin connector. That PSU has outputs for both 6-pin and 8-pin connectors and both are plainly marked.

 
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johnreydegamo

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Yes it is, i,but t's a little bit confusing because there are two manuals and they are both different in jfp1.
 
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johnreydegamo

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The CPU power has 8-pin connector, it is connected properly. I tried the paper clip test again but nothing happens now.
 
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androbourne

androbourne

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Right. But what about the power leads from case to mobo? Have you tried to bypass your cases power button and hitting the leads together on the mobo to kick off the power switch?

Paperclip test on PSU doesn't always work. You want the motherboard to give the signal for power first. Do it using the power switch leads on the mobo instead, see if that makes a difference.

Did you also do as I suggested and removed the extra devices such as GPU from your rig and see if it powers on?
 
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Solution
gdmaclew

gdmaclew

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You should be using pins 6&8.
 
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androbourne

androbourne

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Well like I was saying earlier. If the Power button is bad or wiring to it is bad. It may not power on.

Bypass the cases power and the terminal leads from PSU to the Mobo. Simply use a flat head and touch the terminal leads together. It should power on if you are touching the correct leads together.

Below is an example. You need to find out which ones are yours.
35ddcwj.png
 
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gdmaclew

gdmaclew

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Bypass the terminal leads from the PSU to the Mobo? Are you nuts?


 
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androbourne

androbourne

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Its pretty common troubleshooting... People do this all the time. How do you think the cables work in the first place? The cables handle and ON and OFF mode. On is when it allows the leads to touch via the switch.

Google it. This is a very common troubleshooting method to bypass... I've done it myself many times.

It is also how many people turn on test stations that are not plugged into a case and simply on a test bench.

All those plugs do is tell the system to turn on or off something. Unless you are completely dumb. You can't damage anything by doing this test. It will either turn on, or not.
 
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gdmaclew

gdmaclew

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I assume you mean bypass the leads from the case to the mobo?

 
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gdmaclew

gdmaclew

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I know the picture is clearly on the "case connectors" but you said
"Bypass the cases power AND the terminal leads from PSU to the Mobo"

 
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androbourne

androbourne

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Right well it was meant to say "Bypass the cases power to test the terminal leads from PSU to the Mobo." however, I think the picture was very clear.

I think he will get the point. If you are dumb enough to be sticking a flat head into a PSU and touch things around. You have bigger issues in your life.
 
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gdmaclew

gdmaclew

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We don't call newbies "dumb". They come here looking for precise and correct information. That is what tech support is all about.
 
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