Cap lock key only works when I hold A then press cap lock

Hello,

So I've been having a slight problem, my laptop keyboard has gone a bit haywire - my
Cap lock key only works when I hold A then press cap lock. My x button works when I hold x and press c, my c button works when I hold c and press v, my v button works when I hold v and press c.

This only happened after I discovered a virus infection and took remove it ,
After removing it set my laptop to factory settings to be extra safe yet this problem still persists