(Refer to the Setting the Optimal Resolution) If the initial screen (the login screen) appears, boot the computer in the applicable mode (the safe mode for Windows 7/8/10) and then change the frequency of the video card. If the power is on, reboot the computer to see the initial screen (the login screen), which can be seen. * DVI/HDMI/DP input is not available on every model. Is the cable connected correctly? Connected using the D-sub cable
Is the power cord connected properly? Check the power cord connection and power supply.
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