Please help with this trouble about typing :((

[acedance]

Hello everybody !!

I use US language keyboard everything fine, and when i type some letter in desktop it will line up folder or files with the letter i typed, but when i switched to my keyboard language using unicode, when i type it show up a small board from font book, and it really anoying me when i try to type some letter for search folder or file… etc thing else, and one thing when i typing letters a under black line showing up under any letter i typed. Please view my attach image !

Please help me fix this and really sorry for my bad English !
Thank you so much !

 

[Ichkamo]

Did you try changing the keyboard settings, in system preferences, Language & Text, Input Sources. Put back the U.S. input, maybe you chose another one.
Hope it helped.