Solved Computer not booting but motherboard light coming on

April 29, 2018 at 20:51:17
Specs: Windows 10
Hi.
This is my first time building a computer.
I have plugged the power supply, RAM, CPU and power button in but when I attempt to turn it on nothing happens except a humming (maybe from the power supply) and the motherboard light glowing green.
Please help.
Thanks, Brody
Edit: Also none of the fans spin.

message edited by BrodyEd


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✔ Best Answer
April 30, 2018 at 05:28:07
The specs are a bit lacking. Which Pentium & what speed DDR3 RAM? You'll definitely need more RAM but depending on CPU, you might be able to overclock it enough to not have need to upgrade it.

How did you install the heatsink on the CPU? The thermal paste application varies depending on CPU type & MUST be done correctly.

http://www.arcticsilver.com/intel_a...

"Edit: Also none of the fans spin"

Did you install all the hardware in the case without bench-testing? 1st time builders often skip that very important step.

message edited by riider



#1
April 29, 2018 at 21:26:33
Is the CPU fan running???
Any details/specs on motherboard model/brand, CPU used, RAM installed, Power supply etc..
Where is the monitor connected to? Motherboard HDMI/VGA or VDU card??

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#2
April 29, 2018 at 21:32:59
Hi
No the CPU fan is not running.
The motherboard is an ASUS P5G41T-M LX
CPU: Intel Pentium
1gb ddr3 ram
Power supply: CX 500M
The monitor is connected by vga
I am planning to add more ram but am waiting for it to ship.
Also upgrading CPU to core duo.
Thanks

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#3
April 29, 2018 at 22:20:03
Is the CPU in this list?
https://www.asus.com/Motherboards/P...

Have you connected the 4 pin power plug (yellow/black wires) to the the connector near the CPU socket?

I assume you have a manual at hand:
https://www.asus.com/Motherboards/P...

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#4
April 30, 2018 at 05:28:07
✔ Best Answer
The specs are a bit lacking. Which Pentium & what speed DDR3 RAM? You'll definitely need more RAM but depending on CPU, you might be able to overclock it enough to not have need to upgrade it.

How did you install the heatsink on the CPU? The thermal paste application varies depending on CPU type & MUST be done correctly.

http://www.arcticsilver.com/intel_a...

"Edit: Also none of the fans spin"

Did you install all the hardware in the case without bench-testing? 1st time builders often skip that very important step.

message edited by riider


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#5
May 7, 2018 at 22:24:34
Hi.
Sorry for the late reply.
I did what you suggested and found out the PSU was to blame.
Thanks heaps for your help.
Brody
Edit: Also for future reference could you clarify what you mean by bench testing?

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#6
May 8, 2018 at 01:27:40
How to Bench Test, Build, and Troubleshoot Your Computer
http://www.techsupportforum.com/for...

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