So I accidentally installed something on my computer, and with it came something that I'm not sure if it's a virus or just an annoying problem. What I know is that I can't find a way to remove it. It looks like a program that's all in Chinese, therefore I can't understand anything.
I can't find it in the Add or Remove Programs (when I list the programs by Date, it's also not there).
Here are some screenshots: Imgur: The most awesome images on the Internet
There was also something added to Windows Explorer, on the right side but I managed to remove that (it was also in Chinese, I just clicked a random button).
At the same time that this happened I got this Firefox add-on called GreaseMonkey which I can't remove, I can't see it in the add-on settings but it's still there. And my default search engine constantly turns to yessearch over and over again.
I tried a full antivirus scan but nothing was found.