Computer booting to POST half the time.

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Thorbjorn

Reputable
Aug 1, 2014
4
0
4,510
Hi everybody,

So I had a hard time to find an appropriate title to describe my problem since it is a bit weird.

Here's the exact description of the issue:

When I power up my computer, by hitting the front panel power button, at first everything's turn's up, but I don't have any display on any of my screens (2 screens). Then I have to power it off by pressing the front panel power button a few seconds and boot it up again, then everything works fine except windows not being happy of my previous shutdown.

At first I thought my windows was failing in some ways, so I reinstalled everything on a clean SSD and cleared my other HDD aswell. It did nothing to solve the issue.

I suspected my new ram sticks were causing this issue so I removed them, and tried to boot, exact same issue.

Now I suspect a problem with my PSU, but even removing other non-essential components seems not to fix the issue, so the MOBO could be responsible aswell.

Here are my PC specifications:

Motherboard: ASUS P8 Z77-V LX
CPU: Intel Core i5 3570K @3.40Ghz
Memory: Kingston Hyper X 4x4Gb
GPU: MSI GTX660Ti PE Series
PSU: BeQuiet Xilence 700W
SSD: Samsumg SSD 830 Series (128Go)
Monitor 1: iiyama ProLite E2475HDS (DVI plugged)
Monitor 2: Acer H233H (DVI plugged)
Keyboard: Roccat Ryos MK
Mouse: Roccat Kone XTD

My keyboard and mouse are brand new and the problem existed before they were plugged in so I don't think they have anything to do with it :)

I also did a Memtest twice, and no errors were found in my memory.

Thanks in advance for your help :)
 
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Thorbjorn

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Aug 1, 2014
4
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4,510
Yes, all normal lights stay on while the motherboard boots up without display. Even worse, Windows seems to function properly while I've no display since it tried to install updates at start and lectured me after rebooting for shuting down my computer while updates installation.
 
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Thorbjorn

Reputable
Aug 1, 2014
4
0
4,510
It seems to be what's happening since it's impossible to determine whether or not windows successfully boots up :-/
I think windows boots up correctly every time because the message displayed is "Windows did not shutdown correctly" instead of "Windows failed to boot"

All this means the GPU could be faulty but when it boots up, everything runs perfectly fine even playing games for hours !
 
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Thorbjorn

Reputable
Aug 1, 2014
4
0
4,510
Well hello again, I'm back after some further testing.

So I tried to plug my computer to a HDMI television just to make sure the DVI out on my graphic card wasn't causing the problem. Problem's still here, I'm still clueless about how to fix it, I also tried to restart my computer multiples times and it seems to happen 1 time out of 2, without any change.

I also tested my graphic card with some benchmark programs and found no error so I don't really believe the graphic card is causing this issue :-/
 
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WyomingKnott

WyomingKnott

Legenda in Aeternum
Aug 29, 2006
13,249
3
51,960
Have you tried
1) removing the graphics card and using the onboard graphics to see if you get the same issue?

2) Uninstalling all graphics drivers, booting to safe mode a few times to see if you get the same issue and, if not, downloading some older graphics drivers that may be more stable?

Are the temps running high?
 
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