New pc shuts down while playing Dota 2 (not only dota)

ambenau

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Oct 3, 2014
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Hello,
I've started having this problem while playing Dota 2 at first then it started to do this randomly. I really don't know how best to describe this issue, but here it goes: it just shuts down the monitor (I usualy play with my friends using skype) and the functionality of the PC is off but its still on(nothing happens not blue screen, nor I can give any command), but I can still hear my friends over skype and they hear me (which is totally weird) and it gets me out of the game. After I reset it, it makes a beeping sound (Idk if it is the PSU or something else) and I shut it down manually.
I tried at first to look up similar problems over the forum and thought it might be the AMD graphic card drivers and switched to beta version of the driver i had installed, problem didn't go away... then I read something about the PSU might be the problem and it could be fixed in BIOS (but I'm really afraid to do anything in BIOS)..

My specs are :
Processor : Intel® CoreTM i5-4690, 3.5GHz, Haswell, 6MB, Socket 1150, Box
Motherboard : Asus H81M-K, socket 1150
RAM : Kingston HyperX BEAST 8GB (2x4GB), DDR3, 1600MHz, CL9, 1.65V, XMP
Graphics Card : Sapphire AMD Radeon R9 270X OC Dual-X, 2048MB, GDDR5, 256bit, HDMI, 2x DVI, Display Port
HDD : HDD Seagate Barracuda 1TB, 7200rpm, 64MB, SATA 3 (also I have a Flash SSD Kingston V300 2.5", 120GB, SATA 3 on which I've instaled the OS)
Case : Cooler Master Elite 370, ATX/micro ATX
CPU Cooler : Thermaltake Contac 16
PSU : Inter-Tech Energon 750W
OS : Windows 7 64 bit

Pleas advise, It would be of great help. Thanks!
 

ambenau

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Oct 3, 2014
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I have installed speccy last night, temperatures were ok (between 27- 31) on CPU, Graphic Card, RAM but on motherboard it was up to 121 C (which concerned me a lot)
 

ambenau

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Oct 3, 2014
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Motherboard might be reporting a false value, I've researched about it. Still it might be a problem with it.
 

md1032

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Dec 31, 2007
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Do yourself a favor. Download hardware monitor and furmark. Boot up Hardware monitor and furmark. When you start burning in furmark, watch your voltages. Report back on the % difference between the "min" and "max" values.
 

ambenau

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Oct 3, 2014
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Hei, I have burn the furmark test and here are the differences between min and max: [ http://imgur.com/a/if8gh ]
Also after 10 test-minutes the GPU got up to 72 C