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My computer has nothing on, but the cpu is over 50%.
1. Anti-virus software causes failure.

As the new versions of KV, Jinshan and Rising all add random monitoring of web pages, plug-ins and emails, the system burden will undoubtedly increase. Treatment: There is basically no reasonable treatment. Use as few monitoring services as possible, or upgrade your hardware.

2. The driver is not certified, resulting in CPU resource occupation 100%.

The proliferation of a large number of beta drivers on the Internet has caused failures that are difficult to find. Handling: Pay special attention to the driver of the graphics card. It is recommended to use drivers certified by Microsoft or officially released, and strictly check the model and version.

3, caused by viruses and Trojans

A large number of worms replicate rapidly in the system, resulting in high CPU utilization. Solution: Clean the system memory and local hard disk thoroughly with anti-virus software, and open the system setup software to see if there is any abnormal startup program. Update and upgrade anti-virus software and firewall regularly, strengthen anti-virus awareness and master correct anti-virus knowledge.

4. Click the right mouse button on the control panel-Management Tools-Services-Rising Real-time Monitoring Service to change it to manual.

5. Start-> ; Run-> ; msconfig-& gt; ; Start, close unnecessary startup items, and restart.

6. Check the "svchost" process.

Svchost.exe is the core process of Windows XP system. Svchost.exe not only appears in Windows XP, but also exists in Windows systems using NT kernel. Generally, in Windows 2000, the number of svchost.exe processes is 2, while in Windows XP, the number of svchost.exe processes rises to 4 or more.

7. Check the network connection. Mainly network cards.

8, check the network connection

When a computer with Windows XP installed as a server receives a connection request on port 445, it will allocate memory and a small amount of CPU resources to serve these connections. When the load is too heavy, the CPU utilization may be too high, because there is an inherent trade-off between the number of work items and the responsiveness. You need to determine the appropriate MaxWorkItems settings to improve the system responsiveness. If the setting value is incorrect, the response of the server may be affected, or the user monopolizes too many system resources.

To solve this problem, we can solve it by modifying the registry: expand the branch of [HKEY _ local _ machine \ system \ current control set \ service \ lanmanserver] in the registry editor, and create a new DWORD value named "maxworkitems" in the right window. Then double-click the value, type the following value in the window that opens, and save to exit:

If the memory of the computer exceeds 5 12MB, please type "1024"; If the computer memory is less than 5 12 MB, please type "256".

9. See if using the right mouse button in Windows XP leads to CPU usage of 100%.

Solution:

Turn off the use of transition effects for menus and tooltips.

1. Click Start-Control Panel.

2. Double-click Display in the control panel.

3. Click the Appearance tab in the Display property.

4. Click "Effect" in the "Appearance" tab.

5. In the Effects dialog box, clear the check box before Use transitional effects for menus and tooltips, and click the OK button twice.