Screen turns black, fans speed up, computer crashes with 116 degrees celcius mainboard, Help!

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leMoustache

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Oct 21, 2014
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ey guys,

hope you can help me out.

Out of nowhere my screen turns black, and my fan speeds up to max speed.
After a few seconds of this my computer crashes completely.

Sometimes my screen just turns black and pops back up..
I figured it has something to do with temperature, and i downloaded a recorded and came across this :

cpucpucpu.jpg



"Which motherboard do you have? Which case do you have? Fan config? Is there adequate airflow over your motherboard in your case? Actually, just list out your full system xD."


Well here we go :)

i believe the airflow to be sufficient, my computer doesnt even feel warm of i dont feel any heat coming off.

Information i could gather :
CoolerMaster HAF Tower RC-912A-KKN1 USB 3.0
Motherboard : Asus H97 Pro
OS Name Microsoft Windows 10 Pro
System Type: x64-based PC
Processor Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz, 3601 Mhz, 4 Core(s), 8 Logical Processor(s)
Cooler : ARCTIC Freezer i11 / a11 CPU koeler
SMBIOS Version 2.8
Soundcard name: Scarlett 2i2 USB
Name NVIDIA GeForce GTX 760
Installed memory : 16gb (upgraded from original 8gb)
Hard drives : 120GB SATAIII Samsung EVO SSD
- 3TB seagate Barracuda harddrive (swapped with older 500gb drive)
PSU : Argus APS-720W



interesting fact :
ZS00, ZS91 and CPU all show 28 to 30 dregrees right after booting up, but the mainboard starts off at 118 when just booting up.. (used HW monitor and Openhardware monitor )

 
Solution
amtseung
The use of an external soundcard should reduce load on the CPU. Weird.

The PSU doesn't determine how much voltage the motherboard will get, it's up to the motherboard to ask for a certain amount of voltage for each component attached to it (one of the jobs of the bios).

Actually, you know what I think has happened? Your bad PSU has slowly fried your motherboard over time. Your motherboard is now incapable of properly demanding voltage, so it gets wonky and is doing its best to level out the uneven power delivery coming from the bad PSU, which is on the high side.

Clear CMOS and try booting again. Put a load on the CPU, like running a youtube video or something, and post another screenshot of the motherboard and CPU info like you did...
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amtseung

amtseung

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Motherboards overheat too, and when they overheat, your system will lock up and shut itself down, just like anything else that overheats. Which motherboard do you have? Which case do you have? Fan config? Is there adequate airflow over your motherboard in your case? Actually, just list out your full system xD. I don't know if it'll help resolve the issue, but we'd rather have too much information than not enough.
 
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L

leMoustache

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Oct 21, 2014
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"Which motherboard do you have? Which case do you have? Fan config? Is there adequate airflow over your motherboard in your case? Actually, just list out your full system xD."


Well here we go :)

i believe the airflow to be sufficient, my computer doesnt even feel warm of i dont feel any heat coming off.

Information i could gather :
CoolerMaster HAF Tower RC-912A-KKN1 USB 3.0
Motherboard : Asus H97 Pro
OS Name Microsoft Windows 10 Pro
System Type: x64-based PC
Processor Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz, 3601 Mhz, 4 Core(s), 8 Logical Processor(s)
Cooler : ARCTIC Freezer i11 / a11 CPU koeler
SMBIOS Version 2.8
Soundcard name: Scarlett 2i2 USB
Name NVIDIA GeForce GTX 760
Installed memory : 16gb (upgraded from original 8gb)
Hard drives : 120GB SATAIII Samsung EVO SSD
- 3TB seagate Barracuda harddrive (swapped with older 500gb drive)
PSU : Argus APS-720W



interesting fact :
ZS00, ZS91 and CPU all show 28 to 30 dregrees right after booting up, but the mainboard starts off at 118 when just booting up.. (used HW monitor and Openhardware monitor )
 
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amtseung

amtseung

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That power supply looks decent according to the spec sheets. With two 12v/30A rails, as long as you balance your current system's power draw across both rails, you shouldn't have any power delivery problems.

If two separate programs are reading 100C+ on anything during boot, I suspect something is wrong, either with the programs, the temp sensor, or your hardware. What does your bios say your mainboard temps are? Does it agree with the programs you are using?

You have a very suspicious reading on the motherboard's list of voltages in the image you posted. A CPU Vcore of 0.88V is pretty normal across haswell refresh CPU's. At the very bottom of the list, you have a Vcore of 1.76V. 0.88V through a motherboard's mosfets is a pretty average, reasonably light load. 1.76V through a motherboard's mosfets is lethal, explaining the ridiculously high temperatures listed on the motherboard, and as the temperatures rise, a mosfet's ability to pass power through itself reduces exponentially, so as your system begs for enough power, eventually either your mosfets or power supply give up, and the whole thing catastrophically fails, resulting in a sudden shutdown. I hope you haven't played with your bios settings and maxed out your load line calibration (LLC) settings. Clear CMOS, and see if your temps don't drop.
 
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leMoustache

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Oct 21, 2014
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Thank you!

I must admit im not that skilled with computers and i couldnt follow your whole story.
I have never messed with my BIOS except the booting order to install my OS :)

When i entered my bios, i took a picture of it showing here :
20160926_190337.jpg


Here it says my Motherboard temp is a comfortable 27 degrees, and when i booted my OS again i got a reading of 117 degrees celcius using HWMonitor and OpenHardware.

I was unable to "Clear the CMOS" as i couldnt find that setting, i did however changed the main profile from normal to optimal (showing in large on the right, improving performance).

I dont know anything about the hardware, i ordered it as is less than 2 years ago and never had any sort of crash. (all i ever swapped (Not added) was an internal HDD and 2 Ram memory chips not too long ago)

Is there anything useful you can find in here?
Please let me know what i can do..
 
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amtseung

amtseung

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Clearing CMOS is a physical procedure, not a setting. It is done by removing the button battery on your motherboard after fully powering down (and removing the cable going to the power supply to be safe), leaving it out for about a minute or so, then sticking the battery back in.

While in bios, none of your components are under any real stress, but at least your temperatures are okay. What I was worried about earlier still stands: 0.975 volts through the CPU when it's not working very hard is kind of strange to me. Normally it's around 0.88V, and will only go up under stress. I think you're having temperature issues, since it's symptoms are typically along the lines of "screen goes black, doesn't respond".

I'm honestly not sure what else could be wrong anymore besides bad temps or bad drivers. For now, download Guru DDU, and use it to wipe all graphics drivers, and then reinstall the latest one.
 
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leMoustache

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Oct 21, 2014
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Thanks again,
I was able to use this computer for a good hour, just trying to monitor the temps and finding solutions and it crashed again.
However, this time i got a new symtom which might help out. It wasnt up for very long, but i was able to snap a pic while it was on screen :

20160926_204617.jpg


I have never seen this before and there does seem a correlation between the psu, motherboard and temperature.
Never seen this though, have no clue what it actually means.

Do you still recommend the driver wipe and CMOS clearing?
 
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amtseung

amtseung

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Your computer seems to be screaming at you: THE POWER SUPPLY IS DEAD. If a motherboard picks up a surge and triggers anti-surge protection, it must have been pretty bad. Do you run your PC power through a surge protector?
 
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leMoustache

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Oct 21, 2014
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I actually cant see the surge protector on the wall, so i got power from another room with does have surge protection (if we mean thesame thing here). changed every cable where i get my power from, but it still said 0.975 volts on the CPU and still seeing high temperatures on my motherboard .

Which means it has to be my actual PSU or cable directly from my computer where i got my power from.

I also figured it could have been from any speakers or my external soundcared (Scarlet i2i and KRK VXT 6), but after completely turning those off i still see thesame voltage trough CPU. 1.760 .
 
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amtseung

amtseung

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The use of an external soundcard should reduce load on the CPU. Weird.

The PSU doesn't determine how much voltage the motherboard will get, it's up to the motherboard to ask for a certain amount of voltage for each component attached to it (one of the jobs of the bios).

Actually, you know what I think has happened? Your bad PSU has slowly fried your motherboard over time. Your motherboard is now incapable of properly demanding voltage, so it gets wonky and is doing its best to level out the uneven power delivery coming from the bad PSU, which is on the high side.

Clear CMOS and try booting again. Put a load on the CPU, like running a youtube video or something, and post another screenshot of the motherboard and CPU info like you did before.

If it's still dying, it's time to get a new power supply. Then we can determine if your motherboard is dead too.
 
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Solution
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leMoustache

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Oct 21, 2014
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I contacted the supplier and i had less then a month of warranty left, so i had the option to send it back (pc less than 2 years old), I will post the result when i find out whats wrong with it. I did give them your remarks in order to speed things up :). Thanks ! You actually did help me with finding out there was actually a huge problem with my system.
 
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