Win7 no horn icon prompts because the volume control program is not installed how to solve?

recently, Win7 system users reflect that the sound of the computer is normal, that is, there is no horn icon on the taskbar. Then go to the Control Panel on the sound and audio device properties you want to check the "Put volume icon in the taskbar", but you are prompted "because the volume control program is not installed, Windows cannot display volume controls on the taskbar", what is the problem? and how to solve it? Next, let's take a look.

　　Solution:

One, most likely reason: System loses sndvol32.exe file, file path c:windowssystem32, can upload a sndvol32.exe in other machine, or find a system disc to find Sndvol32.ex_ file copy to System32, Rename to Sndvol32.exe. or search the Web to download one and put it under the appropriate folder. can be run.

Second, on the internet to find download "Repair small horn tool" This software, the software does not need to install, double-click Open to run, as prompted to operate.

Third, in the Control Panel-"management tool-" service, find SSDP Discovery service and Universal Plug and play Device Host. Right-"Properties-" Start type-"has been disabled and restarted the computer."

Four, such as restart after the taskbar does not have volume control icon this time as long as in the registration list of the Startup items to restore the deleted items on the line. Start--"Run" Enter regedit open the registry, turn on Hkey_local_machinesoftwaremicrosoftwindowscurrentversionrun to create a new string "Systray" in its right window ( Right-click New on Run, and the key value (double-click Edit on Systray) is "C:windowssystem32systray.exe", so it's OK.