Oh and let me explain Svchost.exe (Generic Host Process for Win32 Services). Svchost.exe is an integral part of Windows OS. It cannot be stopped or restarted manually. It manages 32-bit DLLs and other services. At startup, Svchost.exe checks the services portion of the registry to construct a list of services that it needs to load. In normal conditions multiple instances of Svchost.exe run at the same time. Each Svchost.exe session can contain a grouping of services, so that separate services can be run depending on how and where Svchost.exe is started. This allows for better control and debugging.
Now, the svchost.exe file is located in the C:\Windows\System32 folder. In other cases, svchost.exe is a virus, spyware, trojan or worm! Check this with Security Task Manager. Peace.