Computer has freaked out

I’m not quite sure how to explain this problem. The computer was acting kind of wierd…odd errors….this morning, so I shut it down. When it came back up, I noticed all the icons in Windows Explorer are not right. Almost everyone is showing half of one type of icon, and half of another. I’ve rebooted and shut down again. I even ran regedit, as when it was coming back up it said there was a registry problem, then fixed itself (supposedly). Has anyone seen this before? Or have any idea what to do?