In case of a Full format, the whole surface of the disk is overwritten with blank information. That takes longer. System files are required if you want to be able to start the computer from a diskette. Many times, I am unable to connect to the Internet and I get a message telling me that the modem is in use by another application. This happens even when I close all other programs.
None show up on the task bar.
I have been told by the computer vendor to turn the modem off and back on. I have an external modem, so it is easy, but it does not help. The only solution when this problem occurs is to restart Windows. It is an excellent device when you don't want accidental shut-downs of your computer. I would also like to point out that one of the benefits on an external modem is that you can see its diagnostic lights.