Mode disables the telephony service in windows 7

Telephony is a feature that works when you connect your computer with a telephone, for example your telephone or mobile phone using a modem to your computer for Internet connection, and a variety of data communication applications between mobile phone and telephone.

If you do not use hp as a modem to your computer, then the telephony features you should turn off (disable) it, so as not to burden your windows.
If you use a cell phone modem to your computer, then this feature is not turned off.

Procedure disable (disable) telephony in Windows 7 are :
1. In search box type in services.msc then hit enter
2. Choose telephony
3. In the Startup type select disabled
Click Apply, then OK