My monitor keeps turning on and off repeatedly.
The Ballast is most likely bad. It is drawing to much power and kicking out the auto reset circuit. This is not worth repairing.
Sorry for the bad news but it happens to many LCD/LED monitors.
How to switch from analog to digital mode
Any contemporary monitor is able to switch analog/digital mode automatically if connection from signal source to monitor is set up properly.Connect digital output from your graphic card to DVI input of the monitor. Disconnect any other signal cables from monitor and switch on both devices (PC & monitor). Wait a while. Monitor checks its inputs and a activates digital DVI, because it is only one active input on it.If none picture excluding error message of monitor is displayed, go through these steps:1) Check whether your monitor is set for automatic input selection. If monitor buttons have no response try to use analog input to activate screen (any picture, desktop background...) and then get monitor menu access by pressing menu button.2) Find out what connector type has your graphics card in PC. Possibilities are: DVI, HDMI, DisplayPort and some their options. See Wikipedia for connector look if you are not sure.Remember that blue D-SUB (VGA) connectors are analogue and you cannot activate digital mode through analog VGA cable.3) Use appropriate cable to connect monitor to PC.Example: Your PC has HDMI output. Use HDMi-to-DVI cable. Your monitor input is DVI and common DVI-DVI cable is not suitable in case you have PC with the HDMI.Note that DVI-to-DVI, DisplayPort-to-DVI etc. cables are available. You must buy right one.Be aware that "Auto" button is inactive in digital mode of monitor.
Bought new screen today
Based upon the Operating System you can change the aspect ratio from 19:9 to 4:3. In windows you can right click anywhere on the free space on your desktop once the menu pop-up click on properties and then setting. once the window open choose the different resolution.
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