PC freezing with buzzing sound while gaming.

Jun 5, 2018
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Hello guys, my pc 4 years old and self build ( i didnt change any part after build it).
When i try to play games my pc freezing with buzzing sound and forces me to close it. If i close my pc and try to open it again sometimes i can do it by 1-2 try but sometimes it took 50-100 restart click in order to open pc. ( btw without crash i can open and close whenever i want) What i mean by that; Everytime i try to open pc only case working. No signal on monitor and keyboard/mouse lights off ( which releated with my mobo. ) So i couldnt decide if its mobo issue or faulty psu. Because it happens only in games and i can play max 5-10 min. ( my fps is great ) Basically my pc hanging after i play 5-10 min game. What i done so far;

-Fresh install windows.
-Update every single driver.
-Install and run furmark = 5 min cpu stress test no error - 5 min gpu stress test: got crash again.
-I check rams with memtest86+ looks good - no bad sectors on HDD.
-Heats when i got crash; cpu max 50° and gpu max 67°. So no overheat problem.
 
Jun 5, 2018
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I dont think its GPU, because when i try to open pc after crash, my screen shows no signal also keyboard mouse lights off. If its gpu then why my mouse and keyboards lights were off. I think its mobo or PSU

Computer Type: PC/Desktop
System Manufacturer/Model Number: 1709
OS: Windows 10 Pro N Version
CPU: i5 4460 @3.4
Motherboard: Asus H81-Gamer
Memory: Kingstone 8GB 1600 MHz
Graphics Card: AMD Radeon R9 280X Vapor-X
Sound Card: Supreme FX
Monitor(s) Displays: Acer K222HQL
Screen Resolution: 1920x1080
PSU: Xigmatek 600W 80+bronze
Case: Xigmatek Asgard 200
Cooling: Standart Fan cooling
 
Jun 5, 2018
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No it doesnt help, Also struggle again when i open pc. I tried to put my phone usb instead of mouse one and its start to charging. I disable it and put mouse back but it didnt work. Basically pc locking after crash. Maybe its like defence im not sure. But if my gpu faulty then why my devices lights off :( dont gett it
 
Jun 5, 2018
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not too clean but i will try new psu soon.