Keyboard Shortcuts Mixed Up

I've recently had this problem where some keyboard shortcuts aren't working or are performing incorrect functions. For example, ctrl+alt+del does nothing, while ctrl+c, in Chrome, opens up the Chrome Elements tab. In fact, while typing this, my shift key has suddenly stopped working and actually prevents me from typing anything when it is held. I'm using caps lock to type capitals. Actually, it seems that some letters it works fine for (like "A"), but some letters (like "O"), it opens my Chrome bookmarks...and now shift plus C is opening that damn Chrome Elements. Shift i is doing that too.