I was playing a game and it was working only 15 minutes. The next my screen went black with this message:
"The current input timing is not supported by the monitor display. Please change your input timing to 1920x1080@60hz or any other monitor listed timing as per the monitor specifications."
I don´t know where is problem. My graphic driver is actual (Catalyst Software Suite 15.7.1)
AMD Radeon R7 240
Dell S2415H connect to HDMI
Philips 170S connect to VGA
Windows 8.1N x64