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Monitor Turns Black and Computer Restarts Spontaneously

Last response: in Windows 8
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June 18, 2014 10:42:29 PM

Hi, everyone. Just wanted to say thanks in advance, before I dump all of this information below. :) 

I have Windows 8.1 on my custom built PC, which has worked relatively error-free since I built it six months ago. At times, the computer would hitch up during videos and distort audio before freezing, but recently I've needed to force restart the computer several times a day.

Symptoms
At random times, any audio or will be cut off and the screen will go black, displaying the text "DVI No Signal." Each time, I have to force shut down and startup the computer manually again. This has happened at least a dozen times today alone. This would occasionally cause spontaneous restarts, however I disabled this functionality to test if the problem would go away and it didn't. Now, it simply turns the screen black.

Background Information
When I initially built the computer, I occasionally ran into a boot error where Windows failed to launch right away because of a "CPU Fan Error." However, it was clear that the fan in question was working, so I bypassed this warning whenever it popped up and booted from the BIOS.

Specs
Memory: 16 GB RAM
CPU: Intel Quad Core i7-3770 @ 3.40 GHz
OS: 64-bit Windows 8.1
GPU: 2-Way SLI NVIDIA GeForce GTX 770
MoBo: ASUS SABERTOOTH Z77 LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
CPU Cooler: Cooler Master Hyper 212 Plus - CPU Cooler with 4 Direct Contact Heatpipes (Not Stock)


    No overclocking in the rig

    The GPU temps appear to be 27 - 31 C according to HWmonitor.

    The rig has 2 rear fans and one top fan, each of which have 3-pin connectors.


Possible Causes?
From my research, it appears that others have encountered similar issues caused by the Windows 8.1 update, but I'm not sure how accurate that is. Although, given that these problems are recent, it's a possibility. Another potential cause could be related to the CPU fan, although I'm not as well versed in those details.

Event Log


PC Temperatures


Again, thanks so much in advance. This website has been invaluable in the past and I've always appreciated the kindness.
June 18, 2014 10:49:27 PM

What are your temps while normal use ?
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June 18, 2014 11:46:41 PM

Yoplait95 said:
What are your temps while normal use ?


Each of the 4 cores range from 39 to 60 C.
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June 18, 2014 11:52:51 PM

Is your fan 3 pin ?
Also what is your PC specs.
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June 19, 2014 6:11:08 PM

Yoplait95 said:
Is your fan 3 pin ?
Also what is your PC specs.


Specs
Memory: 16 GB RAM
CPU: Intel Quad Core i7-3770 @ 3.40 GHz
OS: 64-bit Windows 8.1
GPU: 2-Way SLI NVIDIA GeForce GTX 770

The rig has 2 rear fans and one top fan, each of which have 3-pin connectors.
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June 19, 2014 6:27:41 PM

Are all the power cables seated correctly ? Are you overclocking anything ? Does this happen with one 770 ? Is the CPU cooler stock ? What is your MoBo ? What are the temps of your GPU under normal conditions ? Use HWmonitor to fiind these temps.
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June 19, 2014 7:46:16 PM

Yoplait95 said:
Are all the power cables seated correctly ? Are you overclocking anything ? Does this happen with one 770 ? Is the CPU cooler stock ? What is your MoBo ? What are the temps of your GPU under normal conditions ? Use HWmonitor to fiind these temps.


The GPU temps appear to be 27 - 31 C according to HWmonitor.

MoBo: ASUS SABERTOOTH Z77 LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard

The CPU cooler is not stock. I'm not currently overclocking anything.

Cooler: Cooler Master Hyper 212 Plus - CPU Cooler with 4 Direct Contact Heatpipes

I'll try fastening the power cables again to check that they're in place, as well as checking if the problem occurs with only one 770. I'll get back to you once I've tested those. Thanks again, I really appreciate all of your help.

Here's a screenshot of the PC's temps, if that helps.

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