Question : Cannot change display settings

I accidentally changes the screen size of my monitor to a size that is not supported by the operating system. Now i am not able to revert back. All i see is a floating question mark sign on a black screen every-time i start the machine. i went to safe mode and tried, but when i reboot to normal mode, it still doesnt show.

how can i revert back to the original screen size?

Answer : Cannot change display settings

check this and search for "JVM is not suitable for this"
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