If you can’t change your monitor resolution or the frequency (hertz) that means that either the graphics card or most likely that monitor can’t go any higher.
(Graphics Interchange Format) A bitmap graphics format developed by CompuServe that is popular on the internet. GIF supports 8-bit color (256 colors) and animated pictures.
re: screen resolution
If you can’t change your monitor resolution or the frequency (hertz) that means that either the graphics card or most likely that monitor can’t go any higher.