New computer doesn't post, but did once. (fans work)

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moogle89

moogle89

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Aug 6, 2017
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Hello all.
My new build doesn't post. At first it was the GPU that wasn't all the way in, corrected that and computer posted fine. I installed the OS and some motherboard apps, and then it stopped posting. BTW the motherboards in my possession have no speaker on board, so I won't be able to tell you any beep codes.

Tried the following:
Checked the case wires that connect to the motherboard (power switch, LED)
Reset CMOS
Checked CPU power (extra cable is in)
Tried another motherboard and CPU, also didn't post (but again, the mobo worked since I could see it powering on the fans)
Tried breadboarding it with everything off except the CPU and its fan (+PSU) nothing

Any help is appreciated.

Case: fractal design node 202
Motherboard: ASrock H110M-ITX/AC
CPU: i3 intel
CPU cooler: Noctua NH-L9i
RAM: 8GB DDR4
OS: Windows 10 64 bit
SSD: Sandisk 120GB
GPU: ASUS AMD R7250-1GD5-V2
PSU: Silverstone SFX 80
 
Solution
moogle89
It was a stupid mistake, I had a feeling that it was going to be something like that.

It was the monitor. How on earth I don't know, but here is what happened:

The monitor (new) that I bought has some sort of meta sleep mode where it sleeps by itself and DOES NOT wake up when input is detected.
But it has a blue light on, which made me think it was on sleep mode (and that it would eventually see the output) but NO!

It actually wants you to press the power off button, power it on again, and then that's it. It detects HDMI and all.
Never in my years have I seen something this stupid. Anyway, consider this thread solved..

Thanks a lot for your advice!
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moogle89

moogle89

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Aug 6, 2017
69
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660


Tried the no GPU approach with no results, also your guide is one of the first things I tried going over.
I have a feeling this is a really silly error but can't put my finger on it. I mean everything is new, it should be working flawlessly.
You think it might have something to do with the case? The I/O shield was a pain to install for some reason, and it's kind of bent now. The case also has more than a few screws that aren't really usable. (The case cover is fastened with two out of the four screws)
It could be the mobo thinking that the case is open somehow but this doesn't even get to the BIOS.

 
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moogle89

moogle89

Prominent
Aug 6, 2017
69
0
660
It was a stupid mistake, I had a feeling that it was going to be something like that.

It was the monitor. How on earth I don't know, but here is what happened:

The monitor (new) that I bought has some sort of meta sleep mode where it sleeps by itself and DOES NOT wake up when input is detected.
But it has a blue light on, which made me think it was on sleep mode (and that it would eventually see the output) but NO!

It actually wants you to press the power off button, power it on again, and then that's it. It detects HDMI and all.
Never in my years have I seen something this stupid. Anyway, consider this thread solved..

Thanks a lot for your advice!
 
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