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After waked my PC from sleep... Both Monitors show No Signal

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After waked my PC from sleep... Both Monitors show No Signal, but PC LEDs are ON, and PC is working, and also CDROM drive can ejected... I use hard shutdown [5-sec press ON button] and restarted OK... what the reason of this? the graphics card?

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Hi;

 

Can you shut the PC down again; switch it off (completely, not hibernate or anything); when you switch it on do you see the POST / BIOS screens?

Are you able to boot into safe mode?

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https://www.tenforums.com/graphic-cards/107394-after-awake-my-pc-sleep-both-monitors-show-no-signal-but-pc-l.html#post1336624

 

POSTED AND HERE ^^^^

 

win 10 Pro

I think is because I closed all windows and put it in sleep immediately
hardly happens if give windows some time and after put it in sleep ... this way Never appear this... TO WAKE AND DISPLAYS NO SIGNAL

If you disconnect both monitors and then plug one back in does the monitor wake up ?
NEVER TRIED - BUT WILL DO SO IF HAPPENS AGAIN

HDMI SMALL IN PC TO HDMI FULL IN MONITOR 4K LG

DVI-D IN PC TO HDMI KVM SWITCH TO HDMI IN MONITOR 2K 1080p LG

GRAPHICS CARD IS evga nvidia 2012-2013 model GEFORCE GTX 650 Ti 2GB GDDR5

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I think you're right about the way you put it into sleep mode. Perhaps the drivers don't shutdown properly which means you have to do a full reboot to wake the driver up. Never use sleep mode so not 100% sure.

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