I had my flash drive in, so it is believable that some driver was installed automatically, but I have plugged it in previously and never had this happen. I just got this laptop a few weeks ago; it's a Dell Inspiron 15R running windows 7. Just a few minutes ago, a popup said that "MPD USB Device installed successfully". It is currently "searching preconfigured driver folders". It looked like spyware, but after a whole-computer and anti-rootkit scan, nothing came up. AVG has failed before; can I get a second opinion on whether or not this is a virus?