svchost.exe is using up a lot of memory as I see under task manager thus slowing down my PC heavily. However as soon as I stop svchost.exe my performance (web) speeds up but I loose my sound!
Sounds like you are killing the service that handles audio. It's probably best not to mess with things that you don't understand. On any Windows computer you will see a number of svchost tasks; kill the wrong one and the PC will crash.
Each instance of svchost.exe acts as a host for one or more system services. If you terminate one of these the results are often unpredictable. In most cases the system will behave abnormally or you will experience a system crash or reboot. Terminating svchost.exe is rarely a recommended procedure. Unless you are an expert that would be almost never.
* Start | Run (type) "services.msc" (no quotes)
* Scroll down to "DNS Client", Right-click and select: Properties
* Click the drop-down arrow for "Startup type"
* Select: Manual, click Apply/Ok and restart.
(IF you are the only PC user, and not part of a domain.)
That also eliminates one SVCHOST process in Task Manager.
