Wireless keyboard messed up; keys not working/doing different

Hello, I have a wireless Microsoft keyboard 800. The c, z, x, and v keys don't work at all, shift doesn't either, typing in a site into the toolbar and pressing enter just sends me to a blank Google, w makes it go full screen, the left arrow shows f, bottom r, right t, e opens up elements, I don't know if there are any others but yeah. I replaced the batteries and that didn't do anything. I don't know what prompted this, can anyone help me?