fans rev up - screens go black no signal

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seanayles1

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Dec 24, 2017
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When I use my PC sometimes the fans rev up fast and the screen goes black so I have to manually reboot. There is no signal to both my monitors unless i manually reboot. Also it happen when im gaming or just browsing the web.
My specs:
GTX 1070
i7 7700k
Msi pro carbon motherboard
Corsair ram 16 gb

Help would be appreciated, thanks :)
 
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I'll agree PARTLY with that last post. Accumulated dust certainly can cause problems and should be removed carefully. However, a compressed air hose at a garage is not really a careful method. First of all, such air normally has some moisture and oil droplets in it that can spray out at unpredictable times and contaminate your system. Secondly, the pressure usually is high enough that you MIGHT loosen something. Thirdly, sometimes very high air flow rates over components of your system can generate static electric charges that can result in small discharges through things that can damage them. If you're going to use compressed air, the preferred method is to buy a can (or several) of CLEAN compressed air that is designed for this...
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Paperdoc

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When the screen goes black and the fans come up to full speed, that means the system actually did its own shut-down/reboot. But if it does not complete the reboot and you are forced to do it manually, then something caused a problem that took a while to fix. There might have been insufficient power, or some component (CPU chip or GPU, possibly) might have overheated and caused the shut-down.
 
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seanayles1

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Dec 24, 2017
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Next time it does it i will leave it and see if it actually reboots, thanks for the response
 
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seanayles1

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(Update) I left it when the problem happened but the fans kept spinning at a high rpm and the screens stayed black. There was no automatic reboot i had to do it manually

 
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Gorrak

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I had a similar problem and after trying the obvious (drivers, reseating, etc) I solved it by taking my tower to the gas station and blowing out the dust from the PSU and using different plugs for the GPUs power connectors (my PSU is modular). After this it was fine!!

I honestly believe it was shorting out due to dust and recommend anyone with this problem start by cleaning their psu with high pressure air.
 
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Paperdoc

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I'll agree PARTLY with that last post. Accumulated dust certainly can cause problems and should be removed carefully. However, a compressed air hose at a garage is not really a careful method. First of all, such air normally has some moisture and oil droplets in it that can spray out at unpredictable times and contaminate your system. Secondly, the pressure usually is high enough that you MIGHT loosen something. Thirdly, sometimes very high air flow rates over components of your system can generate static electric charges that can result in small discharges through things that can damage them. If you're going to use compressed air, the preferred method is to buy a can (or several) of CLEAN compressed air that is designed for this purpose. It also has low pressure and is unlikely to cause static electricity problems. I know, that's a lot more expensive.

I have a cheaper method which I think is gentle and safe, although others may disagree. It involves using a common household vacuum, which many tell you NOT to do because it CAN cause static electric charges and damage due to high air flow rates and contact between the vacuum hose and the mobo. To avoid those hazards, I do NOT bring the hose close to components. The resulting low air flow is not good enough to loosen some of the dust. So I use a plain dry clean artist's paint brush and carefully brush over all the places where dust might be, holding the vacuum hose in the near vicinity. The dust loosened by the brush floats into the air and most gets swept away by the suction of the hose.
 
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Gorrak

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While I have read exactly what you said about potential damage many times before, I have been doing it for years without ever damaging a component this way. Sure a canister is safer and recommended. Depending on the buildup a vacuum probably wont be enough, and a canister might not be. Of course if your PC is not working well at all...
All i will add is if you do use the hose at a garage just blow some air away from your PC first to make sure any dirt on the nozzle does not go into the computer and when blowing toward your motherboard or GPU board keep about 15cm distance for safety so you don't "loosen" something. I blow fans point blank to clean them

 
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Paperdoc

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So with your precautions it has worked for you. Glad to hear that. One small note. I have read that blowing fast air thorough a fan can cause it to turn 'way too fast and potentially damage the bearings. Not sure if I believe, but that's what "they say". Simple protective measure: hold the fan blades stationary while you do that, and no risk. However, with a very high-pressure air jet from a hose there can be a danger of forcing air under the skin and causing a problem, so this probably needs either some gloves or a stick or something to keep hands away from high velocity air.
 
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Gorrak

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Really?
Do you really believe that the hose we use to put air into car tires will blow your skin off or did you just really need to say "something"?
This is getting ridiculous

Look, I have been cleaning PCs out like this for years. Of course, like with anything some common sense is necessary. It has NEVER in my experience caused a component to fail, but it has revived more than a few, most recent being the PSU that is working perfectly in the PC I am using to write this. My skin is also intact.
Take this info and use it as you will, don't try it if you feel uncomfortable, but don't dis something you have never tried.
 
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Paperdoc

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I was not being frivolous. I believe what you've said that your method has worked for you without problems. My last caution was based on safety policies I worked with in a large industrial setting. There it was a firm rule that you never used compressed air hoses to blow dirt off any part of your body. The danger was not removing skin. The potential danger was injection of air bubbles or dirt under the skin, and the rare possibility that it could produce an air bubble in a vein leading to embolism. This HAS happened on rare occasions in workplaces, and that's the reason for the rule at work. Just thought I would bring this to the attention of anyone working with this sort of tool.
 
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