The main reason why the computer often freezes and crashes is that the CPU usage is too high.
Nine possibilities for the CPU usage to be too high or occupy 100%:
1. Malfunction caused by anti-virus software
Since the new versions of KV, Kingsoft, and Rising have added random monitoring of web pages, plug-ins, and emails, this undoubtedly increases the system burden. Solution: There is basically no reasonable solution. Try to use the least monitoring service, or upgrade your hardware configuration.
2. The driver has not been certified, causing CPU resources to occupy 100%. Open the device manager and see which device drivers do not have Microsoft's digital signature. If so, right-click to uninstall it, and then download it with WHQL Update and install certified drivers.
A large number of beta drivers are flooding the Internet, causing hard-to-find fault causes. Processing method: Pay special attention to the graphics card driver. It is recommended to use Microsoft-certified or officially released drivers, and strictly check the model and version.
3. Caused by viruses and Trojans
A large number of worms replicate rapidly within the system, causing the CPU resource usage to remain high. Solution: Use reliable anti-virus software to completely clean the system memory and local hard disk, and open the system settings software to check whether there are any programs that start abnormally. Regularly update and upgrade anti-virus software and firewalls, strengthen anti-virus awareness, and master correct anti-virus knowledge.
4. Control Panel - Administrative Tools - Services - RISING REALTIME MONITOR SERVICE Right-click the mouse and change to manual.
5. Start>Run>Enter: msconfig>Start, close unnecessary startup items, and restart.
6. Check the "svchost" process.
svchost.exe is a core process of Windows system. svchost.exe not only appears in Windows XP, but also exists in Windows systems using the NT kernel. Generally, the number of svchost.exe processes in Windows 2000 is 2. In Windows, the number of svchost.exe processes rises to 4 or more. In Windows 7, the number of svchost.exe processes will be more than 10.
7. Check the network connection. Mainly the network card.
8. Check the network connection
When a computer with Windows installed as a server receives a connection request on port 445, it will allocate memory and allocate a small amount of CPU resources. to serve these connections. When overloaded, the CPU occupancy rate may be too high because of the inherent trade-off between the number of work items and responsiveness. You'll want to determine the appropriate MaxWorkItems settings to improve system responsiveness. If the set value is incorrect, the server's responsiveness may be affected, or a user may monopolize too many system resources.
To solve this problem, we can solve it by modifying the registry: Expand the [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver] branch in the registry editor, and create a new name in the right window Is the DWORD value of "maxworkitems". Then double-click the value, type the following value in the window that opens and save and exit:
If the computer has more than 512MB of memory, type "1024"; if the computer has less than 512MB of memory, type "256".
9. Check if using the right mouse button in Windows causes the CPU to occupy 100%.
Why does using the right mouse button in the resource manager cause the CPU resources to occupy 100%?
Symptoms:
In Explorer, when you right-click a directory or a file, you may have the following problems:
Any The file copy operation will likely stop responding at that time
The network connection speed will be significantly reduced
All stream input/output operations such as using Windows Media Player to listen to music will have It may be the cause of music distortion:
When you right-click a file or directory in the explorer, when the shortcut menu is displayed, the CPU usage will increase to 100%. When you close the shortcut menu time to return to normal levels.
Solution:
Method 1: Turn off "Use 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" properties
4. Click "Effects" in the "Appearance" tab
5. In the "Effects" dialog box, clear the check box in front of "Use transition effects for menus and tooltips" and click "OK" twice. button.
Method 2: When using the right button of the mouse to click on the file or directory, first use the left button of the mouse to select your target file or directory. Then use the right mouse button to pop up the shortcut menu.
Solution to 100% CPU usage
Under normal circumstances, if the CPU takes up 100%, our computer will always slow down, and many times we can solve it by making a few changes. It can be solved without asking those prawns anymore.
When the machine slows down, the first thing we think of is of course the task manager to see which program accounts for a higher proportion. If it is a large program, it can be forgiven. After closing the program, as long as the CPU is normal, there will be no problem; if not, then you have to check what program it is. When you can't find out what the process is, search on Google or Baidu. Sometimes it is useless to just end it. Under XP, we can combine the startup items in msconfig to turn off some unused items. Under 2000, you can go to the next winpatrol to use it.
Some commonly used software, such as browsers, take up a lot of CPU, so you need to upgrade the software or simply replace it with other similar software. Sometimes the software and the system are a little incompatible. Of course, we can try Download the compatibility item given to us under the XP system, right-click the .exe file and select compatibility.
Svchost.exe is sometimes a headache. When you see that one of your svchost.exe takes up a lot of CPU, you can go to the next aports or fport to check its corresponding program path, that is Something is calling this svchost.exe. If it is not under c:\Windows\system32 (xp) or c:\winnt\system32 (2000), then it is suspicious. Update your anti-virus software.
We will also encounter 100% CPU usage when right-clicking a file. Sometimes right-clicking to pause may be the problem. Official explanation: First left-click to select, then right-click (I don’t quite understand). Unofficial: Solved by right-clicking on the desktop-Properties-Appearance-Effects and unchecking "Use the following over-effects (U) for menus and tooltips". Some anti-virus software will also have an impact on file monitoring. You can turn off the file monitoring of the anti-virus software; the same is true for monitoring web pages, plug-ins, and emails.
Some drivers may sometimes experience this phenomenon. It is best to choose Microsoft-certified or officially released drivers to install. Sometimes you can upgrade the driver appropriately, but remember that the latest one is not the best.
CPU cooling software, because the software will use all CPU idle time to cool down when running, but Windows cannot distinguish the difference between ordinary CPU usage and the cooling instructions of the cooling software, so the CPU always displays 100%, there is no need to worry about this, it will not affect normal system operation.
When processing larger word files, word’s spelling and grammar checking will tire the CPU. Just open Word’s Tools-Options-Spelling and Grammar and uncheck “Check Spelling and Check Grammar”.
The reason why the CPU usage is high after clicking the avi video file is because the system needs to scan the file first, check all parts of the file, and create an index; solution: right-click the folder where the video file is saved-Properties- General - Advanced, uncheck Allow Indexing Service to index this folder for faster searches.