In other words, Windows couldn't talk to the modem in your computer for whatever reason. This usually needs to be further diagnosed by a hardware technician or the manufacturer of the product. Call your modem vendor's 800 number for further assistance in diagnosing the problem. Modem could not detect a dial tone A modem is similar to a phone. When phone lines are correctly plugged in and working, your phone you will receive a dial tone.
Same rules apply to a modem.
Insure that you have correctly plugged in the phone line from the wall to your computer, and that you can make a phone call over this line. Some modems have two places for the phone line, and the proper placement of the phone line insures a dial tone to the modem. Usually, the fuse system built into the modem generates this error message. In most cases, you may need to replace the modem. Consult a hardware technician or your computer manufacturer for fuerhter assistance.