Reasons and solutions for no display after the industrial computer is powered on
1. There is no display after the computer is powered on
1. There is a continuous alarm sound and no display on the display when the industrial computer is turned on. It may be that the memory is oxidized and the contact is poor or the memory is faulty. After the power is off, re-insert the memory or replace the memory. If after replacing the memory, the industrial computer still has a continuous alarm sound when it is turned on, consider replacing the industrial motherboard.
2. There is no output when the IPC computer is turned on. First, confirm whether the IPC computer is connected to an external capture card or motion control card. If so, remove the external card and then power on the test.
3. There is no alarm sound when the industrial computer is turned on and the display has no display. You can first discharge the CMOS and then start the test. If there is still no display, it may be that the CPU is in poor contact. After the power is off, reinstall the CPU or replace the CPU, but there is still no display. Consider replacing the industrial motherboard.
2. Protection after the computer is powered on
The status of the power-on protection of the industrial computer is to power off immediately after power-on. First determine whether the power supply is protected, remove the power connector from the industrial motherboard, and short-circuit the green line on the 20PIN of the power supply and any black line. If the electric fan rotates normally, the power supply is not faulty.
1. Industrial motherboard protection, it may be that the industrial motherboard is short-circuited or faulty, such as there are screws or water in the industrial control all-in-one computer.
2. Power protection, there is damage inside the power supply.
3. When the industrial motherboard is connected to the aviation head, it should be noted that the positive and negative poles cannot be reversed.
3. There is a display after the computer is powered on
1. The IPC computer prompts a GRUB error after the self-check or the cursor is flashing in the upper left corner, mostly because the master boot record of the IPC computer system is damaged, and the master boot record needs to be rebuilt.
2. If the blue screen occurs during the startup of the industrial computer, first determine whether the hard disk mode is correct. WIN XP is IDE mode, and WIN 7 or above can use IDE or AHCI mode. If the mode is no problem, re-insert the memory or replace the memory, and consider the blue screen. Reinstall the system.
3. After the industrial computer is powered on, it directly enters the BIOS. Generally, the hard disk is not found. You can first check whether the hard disk is loose. If there is no looseness, you can replace the SATA cable and hard disk.
4. The USB interface of the industrial control all-in-one computer cannot be used after entering the system. Reinstall the USB driver. In other cases, reinstall the system.
5. If the computer of the industrial computer keeps restarting after being powered on, you can initialize the BIOS first and then test it. If the problem cannot be solved, consider replacing the memory and industrial motherboard.
6. If the computer starts normally but the hard disk reports an error or the hard disk is lost, you can change the hard disk mode in the BIOS.
7. After the industrial computer enters the system, there are flowers on the display. You can disable the graphics card to view it. If there is no display after disabling, replace the CPU and test again.
8. If you find that the time is wrong after entering the system, you can adjust the time first, then turn off the power and then cut off the 220V power supply, and then turn on the power after 2 minutes of pause. If the time cannot be saved, first use a multimeter to measure the power of the button battery, whether there is about 3V power supply, and replace the battery if the power is insufficient. If the battery power is normal, but the time cannot be saved, the circuit of the industrial motherboard may be abnormal.
9. If the industrial computer has a blue screen, restarts or freezes during use, first check the heat dissipation of the industrial computer (whether the CPU fan and chassis fan are abnormal), and eliminate similar situations caused by system and software problems. The problem still exists, you can test whether the hard disk has bad sectors