Common problems and faults of computer
1, the computer is running too slowly
In addition to hardware factors, computer speed is also closely related to the system. First of all, you can insist on whether the disk space is full, especially the C disk of the computer. If you are close to the limit, you need to delete some content to gain more space, so it is recommended that the application should not be installed on the C drive as much as possible. In addition, some startup items of computer system can be reduced to achieve faster startup speed.
2, the computer network speed is too slow.
If your network speed is too slow, you may wish to log on to speed measuring websites such as Speedtest to test your network speed. If the speed is really slow, check the router again. If everything is all right, you can call the broadband provider to ask if there is any problem with the network service. If you can't connect to the wired or WIFI network all the time, there may be something wrong with the network card hardware. Try downloading and installing the latest driver first. If it still doesn't work, it may be a hardware problem and needs to be replaced.
3. The computer keeps restarting.
Computer restart is usually caused by two aspects. First, infected with the virus, we can enter the safe mode to kill the virus. If the situation remains the same, it may be caused by poor heat dissipation of the hardware, and then clean the computer after all the hardware is updated normally.
Step 4 block pop-up ads
Many times, when we install software, we will accidentally install some junk plug-ins, which will cause the computer to slow down or pop up advertisements. Through some antivirus software, we can remove these junk plug-ins, such as 360 antivirus software. In addition, you can also block Trojan horses or phishing websites by installing such protection software, thus providing you with a green and safe online environment and ensuring the normal operation of your computer.
5. The wireless network cannot be connected.
Sometimes Windows has been unable to connect to the WIFI wireless network, or the display has been limited. We can first try to solve the problem through the "troubleshooting" and "automatic detection and repair" functions in the system. If the problem persists, check the router or PC hardware step by step.
6, website security certificate problem
If the prompt "There is something wrong with the security certificate of this website" appears frequently when surfing the Internet with a browser, it may be because the system clock is set incorrectly. Under normal circumstances, the CMOS battery of the PC motherboard will always keep the clock running. If it fails, you can try to replace the battery.
7. The printer is broken.
In addition to ensuring that the printer driver is the latest version and there is enough paper and ink, we can also try to restart the printer, check the contents in the system tray, and check the print queue to ensure that the "printer offline option" is not checked. We must pay attention to these details.
8. Unable to open email.
Usually, if you can't open the email attachment, it's because you don't have the corresponding software installed in your computer, such as PDF file. Therefore, compatible software can be installed and correctly identified. In addition, if the email attachment does not have the correct extension, it cannot be opened.
Common sense of computer maintenance
1 computer junk file cleaning
1, disk cleaning
Open the computer-right-click the system disk-and select Properties to pop up the disk cleaning dialog box. Click Disk Cleanup, and then select the files to clean after scanning. Click OK to automatically clean up the garbage.
2. Software cleans up garbage
"360 security guards one-click cleaning" function, Tencent housekeeper, Rubik's Cube optimization master and other self-contained garbage cleaning functions.
2. Uninstall uncommon software and reduce startup items.
1. Uninstall unused software.
This computer has been used for a long time. In order to help the system slim down, unused software can be uninstalled. Click Start Menu-Control Panel-Uninstall Programs Uninstall. Or 360 software housekeeper uninstall.
2. Reduce startup projects
Many software will start by default, which will greatly extend the startup time, so unnecessary software can be closed. Turn on the software to start automatically, find "Settings" and cancel "Automatic Start". Or use 360 security guards to optimize functions with one click.
3 Monitor the heat dissipation of the computer.
In the process of computer use, the temperature affects the working state of the computer. When the temperature rises, the computer will automatically shut down to reduce the damage to the hardware. In daily use, do not block the exhaust hole, and add USB to dissipate heat if necessary.
4 4 LCD daily use and maintenance
As one of the main components of computer, LCD screen can maximize its effectiveness and protect eyesight with good usage habits and regular maintenance. In use, do not touch directly with hard objects or press with heavy objects; Avoid strong light; When cleaning, use a wet cloth dipped in water to wring it out or a special cleaner for LCD to clean it.
5 notebook battery maintenance
1. Turn down the screen brightness: You can quickly adjust the brightness by using fn+ Down/Up keys. The specific fn+ key needs to look at your notebook.
2, make good use of standby, hibernation and other functions: when you don't use the computer for a long time, you can let the notebook stand by or hibernate, which not only saves electricity but also prolongs the service life of the computer.
3. Turning on the speedstep function of the cpu can greatly extend the working time of the battery: the speedstep function of the cpu is turned on by default in the bios, and when the battery is used, the CPU will automatically reduce the frequency to save energy. If not, press F2 to find the performance in the BIOS and set Speedstep Enable to Enabled.
4. When using the battery, try to turn off the wireless, Bluetooth and red ports. At the same time, unnecessary peripheral devices are removed to avoid large 3D programs and games, so as to reduce unnecessary battery consumption.
Why is computer cleaning important?
1. Computer keyboard Computer keyboard is the most frequently used computer component, and it is also the place with the most dirt; Almost every computer user must use a keyboard. Besides their own use, many friends may use the same keyboard in different environments. All kinds of germs and high-risk viruses are invisible except for all kinds of stolen goods attached and dropped on the upper surface, side and under the keys of the keyboard. Many international organizations have proved that there are 200 to 480 kinds of germs on a keyboard, and hepatitis B, SARS and influenza that we are very worried about may all come from the keyboard.
2. The mouse mouse has a photoelectric mouse and a mechanical mouse with a rolling ball. It constantly rubs and clicks between the desktop and the palm. Perhaps few people clean its surface, not to mention how dirty the pulley in the roller ball is at the bottom, which directly affects the reflection speed of the mouse. Why not clean it and pollute it again and again?
3. Due to the long-term use of the mainframe, the computer generates static electricity, and the case shell is covered with dust; All kinds of particles and dust are attached to the motherboard, CPU, hard disk and power supply fan. If the heat dissipation is not good enough, it will shut down and bring you losses.
4. The monitor is also easy to get dirty. Beautiful computer screen with unkempt shell, I don't think you are happy? Not to mention someone coming, what impression will you have?
1. Computer fault analysis and solutions 15.
2.20 Computer fault analysis and solutions.
3. Common computer fault maintenance encyclopedia
4. Solutions to common computer faults.
5. Common computer failures.