Why does the CPU usage go up and down?

The CPU usage is suddenly high and low due to a program error. The solution is: 1. Use reliable anti-virus software to completely clean the system memory and local hard disk; 2. Open the system setting software and check whether there is any abnormal startup. Program; 3. When using the computer, do not use it for too long.

# Operating system for this tutorial: Windows 11 system, Dell G3 computer.

1. What should I do if my computer’s CPU usage fluctuates?

There may be several reasons:

1. System service usage, such as automatic Update, etc.; in this case, wait for a while until the system is updated.

2. The Trojan virus invades the computer. After being infected with the virus, the CPU usage is obviously abnormal. In this case, you need to turn on the anti-virus software to scan and kill the computer.

3. Some rogue programs automatically run in the background, resulting in high CPU usage. In this case, the computer can use security software such as Baidu Defender to optimize the system and disable self-starting programs.

4. Too many programs are opened at the same time, resulting in high CPU usage; in this case, you can close other programs first.

2. Why does the cpu usage fluctuate high and low?

Can be analyzed from the following four points:

1. It is recommended that you restart the system to see It looks like it’s still occupied so high.

2. There is a program error. It should be that when completing the exit task, there is a command that cannot be completed, so it keeps repeating, causing the CPU to be extremely high.

3. Too many startup items will also lead to high CPU usage. Except for anti-virus software and input methods, general programs can be prohibited from starting at startup, and there are also unnecessary services and scheduled tasks.

4. You are using software with high CPU usage. The best way in this situation is to replace the software with other similar software with low CPU usage. Expanded information 1. CPU usage is actually the CPU resources occupied by the program you are running, which indicates how your machine is running the program at a certain point in time. The higher the usage rate, it means that your machine is running a lot of programs at this time, and vice versa. The level of usage is directly related to the strength of your CPU.

3. Why is the computer’s CPU usage always too high?

CPU usage is actually the CPU resources occupied by the programs you run, which means that your machine is The situation of the running program at a certain point in time. The higher the usage rate, it means that your machine is running a lot of programs at this time, and vice versa. The level of usage is directly related to the strength of your CPU. Modern time-sharing multi-tasking operating systems all use the CPU in time slices: for example, process A occupies 10ms, then process B occupies 30ms, and then is idle for 60ms, then process A occupies 10ms, process B occupies 30ms, and is idle for 60ms; if This is true for a period of time, then the occupancy rate during this period is 40%.

The CPU's response to the thread is not continuous, and it usually automatically interrupts the thread after a period of time. As the number of unresponsive threads increases, the CPU usage will continue to increase. There are many reasons for high CPU usage, but they are generally caused by viruses, Trojans or too many startup items.

High CPU usage may also indicate a poorly tuned or designed application. Optimizing applications can reduce CPU usage.

4. What should I do if my computer’s CPU usage fluctuates?

1. First, we open the task manager, and then switch to the CPU queue to see which CPU program is occupying it. The CPU fluctuates high and low.

Find the process that occupies unstable CPU and terminate it. If the system process cannot be terminated when found, then there is a system problem.

2. Viruses and Trojans cause

cpu usage to fluctuate high and low. It may be that a large number of worms are rapidly replicating 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

5. Why is the computer CPU suddenly high and low? Situation

Method/Step 1 Solution to unstable laptop CPU temperature: 2 Cause analysis and solution:

1. Under normal circumstances, according to Master Lu’s tips, the maximum temperature of the CPU should not exceed 85 degrees, it is best to control the temperature below 75 degrees which is considered safe. When the temperature exceeds 80 degrees, it is easy to cause the computer to crash or automatically shut down, etc. This is a sign of poor computer heat dissipation.

The problem that causes high computer temperature is generally a heat dissipation problem. For example, the CPU temperature of a general laptop computer is significantly higher than that of a desktop computer.

Mainly because the notebook is affected by its small size. Let’s briefly introduce the factors generally related to high computer CPU temperatures.

2. 1: Ambient temperature 3. The CPU temperature has a lot to do with the ambient temperature. It will be higher in the summer. Generally, it is normal for the CPU temperature to be within 50° when it is idle, within 65° when it is busy, and within 75° when working at full speed. Therefore, we recommend that if the ambient temperature is too high in summer, it is best not to leave the computer on for a long time to avoid Affects the life of the CPU; in winter, due to the low ambient temperature, we will find that the CPU temperature is generally controlled at around 30 degrees. Too high a CPU temperature may cause a restart or a blue screen of crash.

4. 2: CPU fan quality and host environment 5. If the CPU cooling fan is of poor quality and rotates slowly, it will seriously affect the heat dissipation of the CPU, causing the CPU temperature to be very high. At the same time, if the air duct design of the host chassis is Unreasonable, resulting in the internal heat not being discharged in time, and also causing the CPU temperature to be very high. Therefore, it is recommended that when buying a computer, you should also consider the chassis and CPU fan.

6. Three: Overclocking 7. If the computer needs to be overclocked, the working voltage of the CPU needs to be increased. An increase in the working voltage will definitely cause an increase in power consumption and a natural increase in heat generation. Once the heat generation and heat dissipation tend to equal equilibrium, the temperature will no longer rise.

The amount of heat generated is determined by the power of the CPU, and the power is directly proportional to the voltage. Therefore, to control the temperature well, you must control the core voltage of the CPU.

However, if the voltage is too low, it will be unstable. This contradiction is especially obvious when the overclocking range is large.

Many times the system restarts with a blue screen before the CPU temperature reaches the critical value. At this time, the culprit affecting system stability is not the temperature but the voltage. Therefore, how to set the voltage is very important during extreme overclocking. If it is set high, the radiator will not be able to withstand it; if it is set low, the CPU will not be able to withstand it. Therefore, it is generally not recommended for everyone to use overclocking technology. 8. Through the above detailed introduction, what is the normal CPU temperature? This question is related to many factors. It is recommended that when using the computer, you should not use it for too long. The computer also needs a rest.

This way the CPU will not be prone to high temperatures or damage.

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