I noticed that in my taskbar is a little warning icon (the yellow triangular sign with an exclamation point [!] in it) that cannot be closed. you can't click it or right click it, and it has no popup text when my mouse hovers over it. I don't know what it is, and the only time I've seen something like this before was a long time ago when my old computer got a terrible virus that I couldn't fix and had to reinstall windows. I really dont want this to happen to my new computer, so does anyone know what this is/how to fix the problem?