1. The industrial computer's power supply works normally after power-on, but the motherboard does not respond.
First, remove the peripheral cards and connected devices to see if it can boot. If there is no response, remove the memory to see if there are any alarms. Then check if the CPU is working properly. Finally, replace the motherboard and check if it is working properly.
2. The motherboard powers on normally, but the BIOS detects a keyboard error and reports one.
First, check if the keyboard lock is engaged, then release it. If not, check if the motherboard and backplate connections are correct, and if the keyboard and mouse connections are correct.
3. After powering on, the power indicator light on the base plate will turn off after being turned on, so why can't it be powered on?
First, check inside the computer case for any foreign objects causing a short circuit. Second, check if the power cord is connected incorrectly, causing a short circuit to ground. Third, replace the power supply, motherboard, backplate, and other components.
4. After powering on, I hear the motherboard self-test beep, but there is no display on the monitor.
(1) Check if the monitor is properly connected to the host;
(2) Clear the CMOS (the settings may be incorrect) or replace the BIOS;
(3) Replace the CPU board (integrated graphics card on the motherboard) or the monitor.
5. Industrial computer startup time is too long:
(1) Run a disk defragmenter to eliminate fragmentation;
(2) Disable the automatic startup items of the system startup files;
(3) Run a disk cleanup program to remove junk files;
(4) Adjust network settings.
6. After powering on, it was found that the difference between the actual RAM and the actual RAM was too large.
(1) Check if the motherboard memory is shared with the motherboard RAM. In this case, a portion of the memory will be separate from the main memory.
(2) Check if the memory is small-granularity memory, because some older chips do not support large-granularity memory, and only half of the capacity will be displayed after it is installed;
(3) A very small number of motherboards use a dedicated CPU, which occupies part of the memory as an instruction decoder for CPU instruction set conversion, resulting in inconsistent memory capacity.
7. No response from the industrial computer when power is turned on:
(1) Check if the power socket is powered on and if the connection to the industrial computer is normal;
(2) After powering on, check if the power supply fan is spinning and if the monitor is properly connected to the host.
(3) Does the computer beep when the memory is removed and the power is turned on?
(4) Replace the CPU or motherboard.
