U disk dos function is invalid

php editor Strawberry will introduce to you the problem of ineffective DOS function of U disk. USB DOS is a common startup method that can be used when the computer cannot start normally. However, sometimes we may encounter the situation where the DOS function of the USB flash drive is invalid, resulting in the failure to start smoothly. This problem may be caused by many reasons, which will be answered in detail below.

Mouse failure is usually caused by connection problems, poor button contact, dirty mechanical or optical systems, etc. Some low-quality products may have weak soldering or damaged components.

Here are a few examples of mouse troubleshooting, so that everyone can better deal with mouse failures!

1. Mouse movement failure

The mouse does not obey the command and cannot move. What should I do at this time? For the mouse, if this happens, you must first consider whether the rotation of the mouse is affected by dust. Turn the mouse on after shutting down, take out the ball and clean it.

Use a soft cloth to gently dry the mouse, and carefully use a knife or other tool to clean the dirt on the rollers. Use a vacuum cleaner to clean the inside of the mouse thoroughly, then reinstall the mouse and ball. Also, remember to keep your mouse pad clean.

Optical mice are generally not susceptible to dust, but they still need to clean the light-emitting tube, photosensitive tube and lens regularly. Use absolute alcohol when cleaning and wait until the alcohol evaporates before installing the mouse.

2. The mouse malfunctions and flies around

The mouse can be moved, but it flies around when it moves. First, let's talk about software glitches. People usually think of the system being infected with a virus or the mouse driver conflicting with the operating system. However, there is another reason that not everyone may have encountered, and that is that your system may be infected by a Trojan horse, allowing others to remotely control your computer.

It is recommended to use floppy disk anti-virus under DOS first. If it does not work, reinstall the system. Frequent Internet users should download anti-virus software to detect Trojans.

Next let’s talk about the more complicated hardware failure. Hardware solution: First check whether there is any conflict with the hardware, and then try to check whether the pins of your mouse interface are bent or broken. Then, disassemble the mouse and see if there is any dirt wrapped around it or is it twisted backwards? Clear it and try again.

Or, try on another computer to see if the fault persists and whether there is any hardware fault information. If it still doesn't work, you can only adjust the relative positions of the infrared transmitting tube, infrared receiving component and the gate wheel in the direction corresponding to the fault to see if it can be restored.

3. Double-clicking the mouse is invalid

When you double-click a file, the system has no response or is the same as when you clicked it, but the computer can run other programs normally. This situation may be caused by setting the mouse double-click speed too fast. Users can adjust the speed of mouse double-click appropriately. The specific operation method is as follows:

Select "Start" - "Control Panel" - "Mouse" option to open the "Mouse Properties" dialog box, switch to the "Mouse Keys" tab, in Adjust the position of the slider appropriately in the "Double-click Speed" combo box. After the settings are completed, click the "Apply" button and the "OK" button in sequence.

4. The mouse automatically moves irregularly

When no one moves the mouse, it automatically moves irregularly. The reason for this may be that the mouse cable is disconnected. There are a total of four core wires in the mouse connection cable. If you bend the mouse cable back and forth during use, or bend the mouse cable into a deadlock for a long time, this will cause the mouse cable to break. At this time, the user can use a multimeter to test the mouse connection, find the location of the broken wire, and then solder it.

5. The USB mouse often fails to move.

The USB mouse often fails to move when it is turned on or suddenly stops moving during use. After this problem occurred, the system has been reinstalled and the I have changed the USB interface, but the problem still cannot be solved. Why?

From the situation point of view, since the system has been reinstalled, it can be ruled out that conflicts and viruses cause this problem. However, the problem still cannot be solved after replacing the USB interface for testing, indicating that there may be a problem with the south bridge of the motherboard or the mouse itself is faulty.

The first situation is because the USB controller is integrated in the south bridge. It may be a physical failure that causes damage to the south bridge or the PCB line that the south bridge communicates with the USB. This situation cannot be repaired. Can only be replaced with new ones.

The second situation is caused by the product life has expired or the use intensity is too high. The cause of the problem is likely to occur on the cable. If it is within the warranty period, you can ask for replacement. If If the warranty period has expired, it is recommended to send it to a repair station for repair.

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