first time building computer, nothing happens after pressing power button

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ohmychonny

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Oct 2, 2014
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This is my first time building a computer, everything is brand new except the case. I put everything in the case and plugged the 24pin on the motherboard and the 4 pin on for the cpu. I plugged in the PSU and turned the power on, I pressed power button and nothing happens. The light on the motherboard is green. I unplugged the 2pin power button cable and poked it with my screwdriver and nothing happened.

What I have installed:
Asus H81M-E motherboard
Intel Pentium G3258
EVGA 500W 80Plus Power Supply
GSkill Ripjaw X 8gb

Any help is appreciated, thank you.
 
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Guest

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We need more details about your steps to build the machine.
Actually, did you follow any step-by-step tutorial, manual, guide or something?
 
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RookieOfTheYear

RookieOfTheYear

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Feb 18, 2014
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Yea, I know it does. I was just wondering if he had a discrete GPU, some people forget to plug in the 4 pin or two 4 pins into the GPU, if required.
 
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ohmychonny

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Oct 2, 2014
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I just followed the instruction manuals provided and a couple youtube videos on where to plug everything. The case is from an older computer that i took everything out of. I bought all the components brand new. I installed the cpu first, (I might have put alot of thermal paste if that is an issue) I installed the stock fan that came with it. I then put the ram in, 4gb and 4gb in the two slots. I screwed in the optical drive and hard drive. Then put the motherboard in followed by the power supply unit. I connected the SATA cables to the optical drive and hard drive. I connected only the power button and power reset cable to the motherboard, no LEDs. I connected the PSU cables to the motherboard, the optical drive and hard drive. I put in the graphics card 750ti. Finally I went to plug in the PSU to the outlet and turned the PSU power switch on, and pressed power button... nothing happened. I then turned the PSU off and unplugged it, took the graphics card out and tried again and still nothing, I then unplugged the power button cables and poked it with my screwdriver but still nothing.
 
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ohmychonny

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Oct 2, 2014
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Yes I have a GTX 750Ti, there was no slot on the GPU for a pin? I tried starting it with and without the GPU, still nothing.
 
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Paul NZ

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Sep 15, 2014
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Because the CPU is a haswell refresh, I doubt the BIOS thats on it supports it (it needs BIOS 2001 from 18/6/2014 for the G3258).

So unless this BIOS is on it now, its not going to work / boot / turn on

If this is the case, the only thing you can do is

1. Take it into a local PC and ask them to flash it with a lower spec CPU

2. You buy a lower spec CPU then do the above. Then put the G3258 back in
 
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ohmychonny

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Oct 2, 2014
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I don't even have it hooked up on to a monitor. I was just testing if the hardware even works, and nothing happens when I press the power button, no fans run ... nothing.
 
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Guest

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Ok, but after all, and as you said, "The light on the motherboard is green." The power button from the case was working before you install the new components? Did you read the manual of the motherboard to know where to correctly plug the pins of the power button on the motherboard?

Oh, and how much of thermal paste did you apply? If you applied more than in this example below, if you may be grateful your machine didn't turn on.
fbeeccd3_vbattach213932.jpeg


Edited~

Ok, bad news. The Intel H81 chipset on your motherboard Asus H81M-E doesn't support the Intel Pentium G3258. You need a motherboard with Intel Z97 chipset.

http://www.asus.com/Motherboards/H81ME/specifications/
http://ark.intel.com/pt-br/products/82723/Intel-Pentium-Processor-G3258-3M-Cache-3_20-GHz#@compatibility
http://ark.intel.com/pt-br/products/75016/Intel-DH82H81-PCH#@compatibility
http://ark.intel.com/products/82012/Intel-DH82Z97-PCH#@compatibility
 
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ohmychonny

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Oct 2, 2014
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Ok thanks for the advice, I will take it to the store I bought it from and let them have a look.
 
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ohmychonny

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I am not sure the power button from the case was working before, since the old computer I took out stopped turning on. So I plugged the power reset button cable to the power button pins and tried that in case the power button cable was broken, I pressed the reset button and still nothing and of course I mentioned I also tried poking it with the screwdriver.

Yes, I did apply ALOT more thermal paste than in the picture, I have read in this forum that too much thermal paste can be an issue, but do you think that is the main problem?
 
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Guest

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Applying more thermal paste than the necessary is a problem if your turn on the machine, because the paste will melt and spread in the pins of the CPU. Some are conductive (because contain silver) and may harm your hardware, others are non-conductive and may poorly the performance. Take off the cooler, clean the thermal paste with alchool isopropyl. Do not spill it all over the CPU, use a cotton. Apply thermal paste following this guide (the small dot section, method two):
http://www.hardwaresecrets.com/printpage/What-is-the-Best-Way-to-Apply-Thermal-Grease-Part-2/1392
--------------
My past post:

Ok, bad news. The Intel H81 chipset on your motherboard Asus H81M-E doesn't support the Intel Pentium G3258. You need a motherboard with Intel Z97 chipset.

http://www.asus.com/Motherboards/H81ME/specifications/
http://ark.intel.com/pt-br/products/82723/Intel-Pentium...
http://ark.intel.com/pt-br/products/75016/Intel-DH82H81...
http://ark.intel.com/products/82012/Intel-DH82Z97-PCH#@...
------------------
You may be grateful again. If it had turned on, the inconpatibility could have harmed your system.
If the power button is malfunctional, it probably is the main issue. Using a screwdriver isn't the way though.

I think you should fix the compatibility problem first.
 
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ohmychonny

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Oct 2, 2014
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It doesn't? When I bought the motherboard and the CPU together, the person at tigerdirect told me their compatible. Also I found this build off this youtube video: https://www.youtube.com/watch?v=rtLVktnzO2M and this http://pcpartpicker.com/p/k33rqs

If this is the case, what should I do, is it possible to remove the CPU and get a new motherboard? Which motherboard is compatible.
 
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Paul NZ

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Sep 15, 2014
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Wrong that mobo does support the G3258 its on the CPU supported list on the ASUS site. But it needs a BIOS update

http://www.asus.com/nz/Motherboards/H81ME/HelpDesk_CPU/

Its compatible but it needs BIOS 2001 on it before it'll work / support it

Pentium G3258 (3.2GHz, 2C, L3:3M, GT1, 53W, rev.C0) ALL 2001
 
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Jungeltelegrafen

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Sep 29, 2014
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This may be really dumb, but I cannot see it mentioned anywhere in the thread; Did you connect the power/reset cables from the case to the motherboard correctly? Or at all? In the manual of the MB you will see a drawing of the cable/jumper placement.

Most MB will start if you have wrong/incompatible HW plugged into it, but the BIOS will not start properly and some alarm-sound usually follows. If the MB is -completely- dead, it is usually something else wrong.
 
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ohmychonny

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Oct 2, 2014
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Sorry for the late reply guys, thanks everyone for their help. I took it to the shop so they can build it for me. The problem was the old case I was using, the power switches were broken.
 
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