Nine Possibilities to Cause a High CPU Occupancy Rate

Sometimes, we may notice that the system is rather slow to access while we boot up our computer. We may have to wait for a long time to see the response of everything. I have made a lot of research on the Internet, and sort out some useful information from those relevant materials. Actually, there may be many factors leading to this problem. However, all of us can solve the problem ourselves by following the instructions below:

1. Malfunction caused by antivirus software
Some anti-virus software may join the random monitoring function to webpage, plug-in and email, which undoubtedly increases the system burden.

Approach:
Basically there is no reasonable way to deal with this matter, but you are suggested to use the monitoring service minimally, or upgrade your hardware.

2. Non-certified driver resulting in 100% occupancy of CPU resource
A large number of test drivers flood on the Internet, resulting in the difficulty to discover the reasons for the problem.

Approach:
With particular attention to graphics driver, it is recommended to use Microsoft-certified or official driver, and strictly check the type and version of driver.

3. Caused by viruses and Trojans
Numbers of worms reproducing rapidly in the system, keep the occupancy of CPU resource always high.

Approach:
Use reliable antivirus software to complete clear up memory and local hard drive, and open System Configuration Utility window to see whether or not there is abnormal startup program. It is very necessary for users to regularly update the antivirus software and firewall, strengthen antivirus awareness, and get proper knowledge of preventing and removing virus.

4. System Services
Control Panel – Administrative Tools – Services, find out and double click on the item with suspicious name or location, and change its Startup type to be manual.

5. Startup item
Start – Run – msconfig – Startup, close unnecessary startup item, and restart the computer.

6. View “Svchost” process
Svchost.exe is a core process of Windows XP system. Svchost.exe is not just in Windows XP, but also in Windows system with NT kernel. Generally the number of svchost.exe process in Window 2000 is two, while it is up to four or more in Windows XP.

7. Check the network connection
It mainly refers to network card.

8. View Network Connection
When the Windows XP computer is installed to be a server, and the request for connection on port 445, the computer will allocate memory and deploy slight CPU resource to provide services for these connections. When it overloads, CPU occupancy rate may be too high, because there is a inherent trade-off relation between the number of work items and the responsiveness. You should determine appropriate settings of MaxWorkItems to improve system responsiveness. If the value set is not correct, the responsiveness of server may be affected, or too many system resources may be occupied exclusively by a user.

To resolve this problem, we can modify the registry: in the Registry Editor open [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServiceslanmanserver ] branch, and create a new DWORD value named “maxworkitems” in the right window. Then, double click the value, in the open window, type the following values and save:
If your computer has more than 512MB memory, type “1024”; the computer memory is less than 512MB, type “256”.

9. Check whether it is the use of right mouse button in Windows XP that caused 100% occupancy of CPU
Recently, it is reported that the use of right mouse in Resource Manager may result in 100% occupancy of CPU resources. Let’s check what’s going on here.

Symptoms:
In Resource Manager, when you right click a directory or a file, you may likely encounter the problems listed below:
Copy of any files at that time may stop responding.
Network connection speed may lower significantly.
All input/output operations are affected, such as the music heard in Windows Media Player may become distorted.
When the shortcut menu pops up after you right click a file or directory in Resource Manager, the occupancy rate of CPU will increase to 100%, and it comes back to normal level only after you close the shortcut menu.

Approach:
Method One: Turn off “Use the following transition effect for menus and tooltips”
1. Click “Start” – “Control Panel”
2. In the “Control Panel”, double click “Display”
3. In the “Display Properties” window, click on the “Appearance” tab
4. In the “Appearance” tab, click on the “Effects” button
5. In the “Effects” window, clear the tick in front the item “Use the following transition effect for menus and tooltips”, and then click OK – OK buttons to finish.

Method Two: When using the mouse to right click a file or directory, please firstly use the left mouse button to select your target file or directory, and then use the right mouse button to open the shortcut menu.

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