On my desktop, I all of a sudden have a little blue rectangle with two white squares in it filling up half of the square. Occasionally the squares are changing color. The rectangle is only about 1/16 of an inch big. It can be moved around on the screen. There is nothing running on startup when doing msconfig. I have ran malwarebytes and symantec and nothing is working.
Anyone have an idea of what type of virus this may be or how to fix it?