Shulou(Shulou.com)06/02 Report--

This article will explain in detail the solution to the problem of not displaying the boot of the computer. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

Computer boot does not display the solution: 1, check whether the computer's power cord is connected; 2, check whether there is excess metal in the main chassis or observe whether the motherboard is in contact with the chassis; 3, repair the power switch line; 4, replace the power supply.

The troubleshooting method of no display when the computer is started. (no alarm)

Step 1: first check whether the external wiring of the computer is connected properly, plug each connection again to see if the fault is eliminated.

Step 2: if the fault remains, then open the main chassis to see if there is any excess metal in the chassis, or the short circuit caused by the deformation of the motherboard, smell the charred smell in the chassis, whether there is a burnt chip on the motherboard, whether the capacitance around the CPU is damaged, and so on.

Step 3: if not, then clean up the dust on the motherboard, and then check that the computer is normal.

Step 4: if the fault is still the same, then unplug the reset line and other switches and indicator lights on the motherboard, and then use the cone short-circuit switch to see if it can be turned on.

Step 5: if the computer cannot be turned on, then use the minimum system method, unplug the data cable of the hard disk, floppy drive and CD-ROM drive, and then check whether the computer can be turned on. If the computer monitor shows a boot screen, the problem lies in these devices. Then connect the above several devices to the computer one by one, when connected to a certain equipment, the fault reappears, indicating that the fault is caused by this equipment, and finally focus on checking the equipment.

Step 6: if the failure continues, the failure may be caused by memory, video card, CPU, motherboard and other devices. Then use plug and unplug method, swap method and other methods to check whether the memory, graphics card, CPU and other equipment are normal, if there is a damaged equipment, replace the damaged equipment.

Step 7: if the memory, graphics card, CPU and other equipment are normal, then discharge the BIOS, use the isolation method, place the motherboard outside the chassis, connect the memory, video card, CPU, etc., and test if the computer can display, and then install the motherboard into the chassis to test until the cause of the failure is found. If the fault remains, the motherboard needs to be returned to the manufacturer for repair.

Step 8: the computer boot does not show but there is an alarm. When the computer starts up, the system BIOS begins to carry out POST (power-on self-test). When a fatal error is detected in a device in the computer, the speaker is controlled to report the error. As a result, there may be a failure that the alarm sound is not displayed when the system is turned on. For the computer boot does not show that there is an alarm sound fault can be based on the meaning of the BIOS alarm sound, to check the fault of the equipment, in order to troubleshoot.

Unable to power on, LED does not light up troubleshooting

When the computer fails to boot, follow the following methods to detect it:

(1) first check whether the power cord of the computer is connected. If normal, then open the main chassis and check that the motherboard power cable is connected to the motherboard power connector properly.

(2) if the connection is normal, then check to see if there is any excess metal in the main chassis or to see if the motherboard is in contact with the chassis, if so, it may not be able to boot due to a short circuit.

(3) if there is no excess metal in the chassis, and the motherboard is not in contact with the chassis, then unplug the motherboard power switch cable and short-circuit the motherboard power switch interface with tweezers, if the computer can start, it may be poor contact or damage of the power switch connection cable on the chassis, repair the power switch cable.

(4) if the power switch on the motherboard is short-circuited, the computer cannot start, then unplug the power cord on the motherboard, and use a wire to short-circuit the green wire hole of the power connector connected to the power interface of the motherboard and the black wire hole next to it. Observe whether the fan of the power supply rotates. If the fan does not rotate, the power supply may be damaged. Replace the power supply.

This is the end of this article on "the solution of computer boot not displaying". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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