The computer has failed. Where can I solve it?

Is it often a computer failure? This is for sure. Computer failure is very familiar to us, but many times we encounter a fault. We don’t know how to eliminate and solve it. Today this tutorial is I have compiled some information for you, so you can take a look.

1. Power sockets and switches Many peripheral devices are independently powered. It is not enough to turn on the power of the computer when running the microcomputer. For example, if the display power switch is not turned on, it will cause the illusion of “black screen” and “dead machine”; if the external MODEM power switch is not turned on or the power plug is not plugged in, it cannot dial, access the Internet, transfer files, or even MODEM. Cannot be identified. Printers, scanners, etc. are all independent power supply devices. When encountering peripheral faults of independent power supply, first check whether the power supply of the equipment is normal, whether the power plug/socket is in good contact, and whether the power switch is turned on.

2, connection problems The peripherals and the computer are connected through the data line, the data line off, poor contact will cause the peripheral to work abnormally. For example, if the display connector is loose, it will cause screen color change and no display failure. For example, if the printer is placed next to the computer, it means that the printer is connected to the computer. You should check the cable connection between the devices correctly.

3, setting problems such as: display no display is likely to be line frequency confusion, width is compressed, or even the brightness is adjusted to the darkest; the speaker can not put out the sound may be just the volume switch is turned off; Not recognized may be just the main, from the disk jumper position is not right … …. A detailed look at the setup of the peripherals and a hands-on test can help identify problems that were originally thought to be non-replaceable parts.

4, the new features of the system Many "failure" phenomenon is actually a new feature of the hardware device or operating system. For example, a host with energy-saving function will automatically turn off the power of the monitor and hard disk after no time using the computer or running without a program. After you tap the keyboard, it will return to normal. If you don't know this feature, you may think that the monitor and hard disk are out of order. Another example is the screen saver of Windows and NC, which often makes people think that virus attack … … know more about the new features of microcomputers, peripherals, application software, multi-directional experts, help increase knowledge, reduce unnecessary panic. [] 5, other places that are easy to neglect CD-ROM read disk error may just be that you accidentally put the front and back of the disc down; floppy disk can not be written, perhaps just write protection slipped to the "read-only" position. In the event of a failure, you should first determine if there is any negligence in your operation, rather than blindly asserting that something is wrong with the device.

Common detection methods for microcomputer failures

1. Cleaning method For machines with poor operating environment or long-term use, clean them first. Use a brush to gently brush the dust on the motherboard and peripherals. If the dust has been cleaned or there is no dust, proceed to the next step. In addition, because some cards or chips on the board adopt pin form, vibration, dust and other reasons, the pins are often oxidized and the contact is poor. Use an eraser to wipe off the surface oxide layer, re-plug it and turn it on to check if the fault is eliminated.

2, direct observation method that is, "look, listen, smell, touch". “Watch” is to observe whether the plugs and sockets of the system board are skewed, whether the resistance and capacitance pins touch each other, whether the surface is burnt, whether the surface of the chip is cracked, and whether the copper foil on the main board is blown. Also check to see if any foreign objects fall into the components of the motherboard (causing a short circuit), or look at the burnt-colored place on the board, whether the traces (copper foil) on the printed circuit board are broken, and so on. “Listen” is to monitor whether the working sound of the power supply fan, soft/hard disk motor or seek mechanism, display transformer, etc. is normal. In addition, when a short-circuit fault occurs in the system, it is often accompanied by an abnormal sound. Monitoring can detect hidden dangers and help take immediate action in the event of an accident. “Smell” that is, whether there is a burnt smell in the host and the board, it is easy to find faults and determine the location of the short circuit. “Touch” is to press the active chip of the socket to see if the chip is loose or not in contact. In addition, when the system is running, the outer casing of the device, such as the CPU, the display, the hard disk, etc., can be judged according to its temperature to determine whether the device is operating normally; the surface of some chips is touched by hand, and if it is hot, the chip is damaged.