My friend installed some weird Chinese software on my computer

[Mr.Turtle]

It's called SogouInput. That day when I got home and turn on my computer, everything on my computer were turned into Chinese! When I opened IE, everything on the internet was in Chinese! When I tried to type, my keyboard was Chinese! I could type in only Chinese! Anyone knows about this program? I was totally freaked out because I have my bank account in this computer of mine...