What are the common computer failures?

2024-11-15

1. If there is no sound, follow the steps below:

(1) Check the power supply and other parts for any problems.

(2) Check if the power switch pins on the motherboard are connected correctly. The power switch pins are usually located on the outermost side, but some motherboards have special locations for the power pins. Be careful not to insert them incorrectly.

(3) The memory is usually the place where faults are most likely to occur during installation. Especially for low-end motherboards, poor contact often occurs due to the quality of the connectors. First, check if the memory is tightly inserted. The motherboard memory slot may be damaged. Try changing the slot. In addition, good motherboards are generally very compatible, while integrated boards, especially set boards, are particularly picky about memory. Of course, the easiest way is to try changing the memory.

(4) Check if the CPU is in good contact. Be especially careful with motherboards with slots. Some motherboards have very tight slots and require force to insert. Check if the gold finger of the CPU is exposed. This should be especially noted for original slot CPUs, because the slot package easily blocks the view and may be mistakenly considered to be fully inserted. If you use a 370 architecture CPU, make sure the CPU is completely flat. Use your fingers to press the four corners of the CPU tightly, press the lever and then release it.

(5) If there is still no effect, then replace the power supply. If your motherboard is an integrated board, the power supply problem should be given priority. In other words, integrated boards are particularly "picky" about power supplies. If you encounter this problem, you might as well try a brand-name power supply.

[2] 1. If the problem still cannot be solved after the above steps, you have to find a dealer. After the minimum system test is successful, you can install the motherboard and other components into the chassis.

[2] 2. If the minimum system is normal, but there is no response after all the connections are made, it may be:

(l) The hard disk cable is plugged in the wrong way. Remember: hard disk cable No. 1 (the red line) is always close to the power cable.

(2) The power supply is insufficient. You can try to unplug the optical drive power supply, and then unplug the hard disk. If it is normal, it means that the power supply is too small.

(3) The memory module is loose again.

(4) Other uncommon situations: The bolts of a low-quality case are too tight, which may cause the motherboard to twist or short-circuit. Solution: Loosen the bolts or change the case, and temporarily place a piece of plastic foam pad where the motherboard may contact the case wall.

3. If the computer responds and the fan is running normally, but there is no signal from the monitor: (l) Check whether the graphics card is properly inserted. The AGP slot of some motherboards is relatively loose, and if it encounters a graphics card with a thin board, it is easy to have poor contact. It is recommended that you prepare a PCI graphics card when installing the computer and use it to try it. However, some motherboards have a B20S chip in front of the PCI slot. In this case, some PCI graphics cards protruding from the bottom of the board cannot be inserted into place and need to change a slot. In addition, if you use an integrated motherboard and you want to connect an external graphics card, there may be restrictions on the type of graphics card. For example, the S5730 motherboard requires a graphics card of TNT or above. (2) Is the monitor video cable connected properly?

4. After the installation is completed and the test is passed, the next step is to set up the hard disk, then start the CD, partition... What kind of problems may occur here?

(1) Unable to find the hard disk: ① Listen to the sound to confirm whether the hard disk is running, otherwise there may be a problem with the power supply. ② Check whether the data cable is connected properly. If the same data cable is used to connect the hard disk and the optical drive, the length of the cable may be very tight. ③ Check whether the hard disk jumper is set correctly and whether it conflicts with the optical drive. ④ Check whether the COMS hard disk setting is correct. For example: the MODE parameter of the hard disk should generally be set to "AuTo" or "LBA" instead of "Norma-". I still can't find it, so I have to go to the seller.

(2) Optical drive problem: The optical drive is spinning, but it just won't read the disk. What's going on? First check whether the jumper is correct. If you use a single data cable, jump to "MASTER".

(3) Floppy drive problem: ① The floppy drive light is always on but the disk is not read. This may be because the floppy drive cable is connected in reverse. Installing the data cable of the floppy drive is not as simple as connecting the hard disk cable. The floppy drive wiring depends on the specific model. Note that there is a ',1"` or ▲" on the data cable pin on the floppy drive. Just align the red side of the data cable here. ② It always prompts that the floppy disk is not formatted. This is because the disk is not in place. The reason why the head cannot be aligned. The method is to readjust the front and back position of the floppy drive so that the disk is just right. Some cases are easily deformed, and the material of the floppy drive is also very thin, which will cause the floppy drive to deform. ③ The floppy drive cannot be used to boot, but the disk can be read. This is probably because you bought a refurbished floppy drive. However, since floppy disks are basically obsolete now, this problem rarely occurs.

Other problems are software problems. I will not go into details here. Finally, there are two precautions: one is the problem of static electricity. There is usually no problem in summer, but in winter, especially in the north, the climate is dry, so you should pay attention. When static electricity accumulates to a certain extent, it is easy to cause damage to the hardware. Therefore, before touching key components such as memory sticks, you should touch the case with your hand to eliminate static electricity. Second, the memory stick must be firmly inserted. The clips on both sides must be completely stuck, otherwise the memory or even the motherboard may be burned, especially after transportation and bumps. Check before starting.