Use this code:
[[File:{{#ifexist: Media:{{{1}}}.png | {{{1}}}.png | {{{2|NOEPHD}}}.png }}|{{#ifexist: Media:{{{1}}}.png | 100px | {{{3|100}}}px }}]]<noinclude>[[Category:Image templates]]</noinclude>
Use this code:
[[File:{{#ifexist: Media:{{{1}}}.png | {{{1}}}.png | {{{2|NOEPHD}}}.png }}|{{#ifexist: Media:{{{1}}}.png | 100px | {{{3|100}}}px }}]]<noinclude>[[Category:Image templates]]</noinclude>