Pc sometimes refuse to enter UEFI. Black screen.

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marcli24

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Apr 18, 2016
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Hi. I dont know why today 2 times my pc refues enter to UEFI. I was entering DEL and black screen and nothing happened so i was force hard reset. Now its ok. But it happened 2 times and i dont know why. It is something wrong with pc? ( i was in time of installing Windows 10 ) .Its no monitor , because signal was on, green light on monitor. It just stuck on black screen and wont enter to UEFI. So i was force hard reset. That happened two times. I dont know why because now its working fine and i can enter to UEFI. Any suggestions what failing?

My mobo is Asus Sabertooth Z97 Mark 2
CPU is 4790k no OC
Ram 2x8GB Kingston Hyperx 1600mhz
Corsair 750 RM
 
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