Okay, so theres this file, on my computer. It was going to be some joke graphic file, and I made it using Paint. I saved it as a .png and when saving, Paint froze for some reason. So I exited paint via the task manager, and then the file is still on my desktop. So I go to click it, and delete it, but it says this file is in use, you cannot delete it. (Or something like that). So, I restarted my computer, and now, all the icons on my desktop are screwed up, they don't show as if they aren't recognized, and I STILL can't delete the file.
How can I find out where a file is being used in a program? Or how can I fix this?