W10 10 PC with an NVidia Geforce GTX 560 TI graphics card.
Connected to a Samsung S23C650 monitor. (via a KVM)
Usually used in a High res mode ... working fine earlier, shut down when I started up again ... it is in low res 1024 x 768
Under Settings >Display it does not list any higher res settings .... such as the normally used 2560 x 1600.
Under device Manager it shows card without any error icon .. and it shows no driver updated since March.
As an initial step, go to your computer maker's support site & check for any BIOS update & for a copy of your display driver [if the display adapter is a separate one then get the driver from NVidia instead].
Installing the display driver again will, at the very least, establish a firm basis for investigating the problem but might be its entire solution.
Re-installing the display driver achieves much, much more than just checking it in Device manager because that cannot tell if the driver is not working correctly.
Best of luck,
Denis
Today its back to normal.
I'll reinstall driver anyway.
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