win7 : Svchost.exe take up memory on the 100%

Recently once my computer connected to the internet, the CPU  is up to 100%! 

Task Manager to see many SVCHOST.EXE always ocuppy for a great memory, CPU at 100%. 

Termination of this process! And then to check the relevant web content! Prior to this process has a certain understanding of this to happen to them, and 

First, we first get to know what it is attached to svchost.exe system file C: \ Windows \ system32 management system under a variety of services to start Windows NT core of an important process, Svchost.exe is actually a service host, which in itself does not provide any services to users, but can be used to run dynamic-link library DLL files to start the corresponding service. Svchost.exe process can simultaneously start multiple services. Under normal circumstances, windows can have multiple Svchost.exe processes running simultaneously, such as Windows 2000 there are at least two Svchost process, Windows XP has more than 4. 
Svchost.exe is precisely because of these characteristics also make a lot of virus, the virus load used to hide Trojans, first of all when we find that this process take up too much memory, the first should take into account whether it is caused by a virus, use of tools to find svchost.exe, if the There is not: \ Windows \ system32 Under this document, then you have to be careful of, first, under this path is not in the file deleted in its entirety into the Registry Editor to view svchost is not in its next \ Windows \ system32 construction value of removed ! 
If you did not find the above questions then it is very likely perform a system update failed, resulting in this process take up too much CPU. To resolve this problem, enter C: windons / SoftwareDistribution to delete all files, this file is UPdate the downloaded file, if not removed. Right-click My Computer to enter the Computer Management interface for the service entry where the Automatic update of the status change can be removed manually restart. Then re-enter to change it back again to restart the problem solved!