Screen randomly shutting off

[matrix0077]

My PC sometimes randomly shuts off my screen i tried replugging screen from both sides turning it off and on again changing sources my GPU was still running and my PC was still running also my power button that i have set to turn off computer when i press it doesn,t work not sure about sound i need to hold the power button down to hard shutdown 1 thing i also noticed last time this happened is that my Keyboard turns off when this happens but my mouse and headset is still working
SPECS:Ram:Kingston HyperX Blu 8GB / DDR3 1600Hz / CL10-10-10
Case:EUROCASE ML X802 Gaming / ATX
GPU:Sapphire DUAL-X R9 280X OC 3GB
Power source:FSP Fortron 550W / 80PLUS
HDD:Seagate Barracuda 7200.14 1TB / 3.5" / 7 200 rpm
SSD:Samsung 840 EVO 120GB / SSD / 2.5" / SATA III
CPU:Intel Core i5-4570 3.20 GHz / 4 jádra / 6MB cache
MB:Gigabyte Z87P-D3 / Intel Z87 / DDR3 / PCIe 3.0 / SATA

 

[Suzuki@1473780084@1473780163]

Try a different wall socket, or power cord.

Also, I'm having trouble understanding your issue, could you be a little bit more specific? Your English is fine, it's just that you jump from one thing then straight on to another problem, making it hard to understand.


All the best!

 

[matrix0077]

im sorry for my lack of expressions skills i will try to explain it a little more. usually i just surf around web but sometimes my monitor just blacks out saying no signal my sound also cuts off but my mouse and keyboard still working when i press the power button to turn off my pc it does nothing it also stops the keyboard from working but mouse is still lighting i usually hold down power button until the pc hard shutdowns it seems like MB problem

 

[Suzuki@1473780084@1473780163]

Have you tried using a different wall socket, and a different power cord for your monitor?

 

[matrix0077]

tried to use my PS3 when it lagged and the monitor worked perfectly switched power cord too nothing changed

 

[matrix0077]

also 1 thing that happened today i started mashing 1 button rapidly in a videogame and my monitor blacked out the same thing happened and all my ventilators started running at max speed