CPU Usage 100 Percent - 9 Possible Reasons Cause CPU Usage Always at 100%

Your computer's CPU usage is always at 100% inReason#5: There are unnecessary programs
Windows Task Manager when you find that therunning at startup.
computer is running slower and slower. So whatReason#6: There are something wrong with the
happened to your computer? This article showsprocess of svchost.
you 9 possible reasons.Svchost.exe is an important core of system
Reason#1: Antivirus software adds great burdenwhich exists in any operating system using NT
to your computer.core. Generally speaking, there are two
The antivirus programs prevent your computersvchost.exe on windows2000 while there are at
from viruses or spywares while their powerfulleast four svchost.exe on windowsXP.
monitor service to your computer may burdenReason#7: There are something wrong with your
your computer a lot.network card.
Reason#2: Your computer's driver is notReason#8: There are something wrong with
authorized.network server.
There are numerous trial versions of driversWhen you use a computer as a network server
which cause indiscoverable malfunctions toand then it receives network connection's
computers available on the internet.requirement from a port, the computer will assign
Reason#3: Viruses/Trojans occupy large ofsome memory and parts of CPU resource to
system space.provide the network connection service. When
Some viruses can duplicate themselves quickly inthe CPU is subject to excessive load, the CPU
the system which in turn leads to constantly highusage is always at 100%.
CPU usage.Reason#9: sometimes using the functions of the
Reason#4: The status of computer's rising realright mouse button will also cause CPU usage to
time monitor service is not manual.show 100%.