1. Change the chip to solve motherboard issues:

Problem phenomenon: A compatible machine’s motherboard has an integrated graphics card. One day after turning on the computer, the display shows no signal, and the speaker inside the case emits a “beep, beep” sound. Problem analysis and handling: Since the speaker is alarming, it proves that the problem is hardware-related. Open the case, remove the motherboard, and carefully observe that the interfaces related to the components are correctly installed, ruling out the possibility of poor contact. Upon closer inspection, it is found that there is a chip marked “BIOS” on the motherboard, as the graphics card belongs to the basic input-output system, this chip is the most suspicious. Replacing it with a normal chip of the same model resolves the issue.

2. Insufficient battery power on the motherboard causing startup issues:

Problem phenomenon: A computer using an ASUS motherboard shows no signal on the monitor after startup, and from the sounds and indicator lights of the optical drive and hard drive, it can be determined that the computer is repeatedly restarting. The speaker emits a “beep” alarm sound. Problem analysis and handling: First, using the elimination method, disconnect the power cables from the optical drive, hard drive, and other devices, and restart. The speaker still alarms, indicating that the problem is not with them. Next, using the substitution method, test the processor, memory, and graphics card on another computer, and they work normally. Therefore, the focus is on the motherboard. Based on analysis, it is suspected that there is a short circuit at the reset button of the motherboard, causing the repeated restarts. After measuring with a multimeter, no short circuit is found. Finally, after replacing the motherboard battery, the issue is resolved.

3. Unable to install Win 2000:

Problem phenomenon: A computer cannot install Win 2000, and during installation, it prompts that there is an ACPI issue and requests a BIOS upgrade. Problem analysis and handling: ACPI refers to Advanced Configuration and Power Interface, which must be supported by both the motherboard BIOS and the operating system to function properly. The prompt indicates that the current version of the BIOS has incomplete ACPI functionality and is incompatible with Win 2000. The solution is to upgrade to a new version of the BIOS. If the updated BIOS file cannot be found temporarily, set the “ACPI Function” option in the BIOS to “Disable” to resolve the issue.

4. Motherboard issues causing crashes:

Problem phenomenon: A computer using the MSI 850Pro2 motherboard frequently crashes after installing Win 2000. Problem analysis and handling: If an ATA66/ATA100 hard drive is used on the MSI 850Pro2 motherboard, and the hard drive cable is a 40-pin cable, or if the 80-pin hard drive cable is connected incorrectly, this problem will occur. Simply upgrading the BIOS to the latest version can resolve the issue.

5. Incompatibility of front USB connection causing mouse issues:

Problem phenomenon: The mouse is connected to the front USB port of the case, and after turning on the computer, the optical mouse’s bottom sensor light does not turn on, and the cursor cannot be moved after entering the system. Problem analysis and handling: After connecting the mouse to the USB port on the back of the host, the issue is resolved. The front USB ports of the case have become popular recently, but the compatibility between USB products from different manufacturers is often insufficient, leading to conflicts and affecting normal operation.

6. Huataike motherboard not powering on:

Problem phenomenon: A computer configured with a Huataike motherboard recently experienced the following issue: after turning on the power switch, the power fan and processor fan spin normally, but the CDROM and hard drive show no response. After waiting a few minutes, the computer can power on and start normally. There is no problem with restarting under power, but the above issue occurs again after a cold start. Problem analysis and handling: From the problem phenomenon, it is first considered that there is an issue with the power supply, so the power supply is replaced, but the problem persists. The focus then shifts to the motherboard. Since the motherboard works normally after powering on, it proves that the motherboard chip is not faulty, so attention is directed to the power section of the motherboard. Since the power fan and processor fan are spinning normally, it can be inferred that the power supply is normal. After running the computer for a few minutes and then turning off the power, touching the power components of the motherboard reveals that several capacitors near the processor are very hot, thus preliminarily concluding that there is an issue with the capacitors. After replacing them with new capacitors of the same model, the issue is resolved.

7. Motherboard issues causing no display on startup:

Problem phenomenon: A computer has no display on startup due to motherboard issues. Problem analysis and handling: There are several situations that can cause no display due to motherboard issues: 1) If the motherboard expansion slot or expansion card has issues, inserting sound cards or other expansion cards may cause the motherboard to not respond, resulting in no display. In this case, the expansion card can be replaced or the motherboard can be sent for repair; 2) If the processor frequency set in the BIOS is incorrect, it may also cause display issues. The solution is simple; just discharge the battery to clear the corresponding information in the CMOS; 3) Motherboard damage. This situation may occur if the motherboard has been used for too long, and battery leakage causes mold on the circuit board, preventing the motherboard from functioning properly. Cleaning the motherboard can resolve this issue; 4) The motherboard BIOS is damaged by a virus. Generally, when the BIOS is damaged, the data on the hard disk will also be damaged, so checking the integrity of the hard disk data can help determine whether the BIOS is damaged. If the BIOS is indeed damaged, it can be addressed as follows: insert an ISA graphics card to check for display; if there is still no display, the BIOS can be refreshed through blind flashing.

8. Frequent computer crashes:

Problem phenomenon: A computer frequently crashes, even during BIOS settings. Problem analysis and handling: If a crash occurs while entering BIOS, it can be preliminarily determined that there is an issue with the motherboard or processor, usually due to a problem with the processor’s cache. Entering BIOS settings and disabling Cache can resolve the issue. If the problem persists, the processor must be replaced; 2) After a crash, touching the components around the processor on the motherboard can indicate high temperatures, suggesting that poor heat dissipation is causing the crashes. Replacing the high-power fan can resolve the issue.

9. Unable to start the computer:

Problem phenomenon: A computer cannot start normally. Problem analysis and handling: There are many reasons for a computer not starting normally; the following introduces and proposes solutions: 1) Compatibility issues. If there are compatibility issues between the motherboard and processor, between the motherboard and other cards, or between cards, the computer will not start; 2) If there is an issue with any part of the processor, graphics card, or memory, the computer will not start. The elimination method can be used to test whether these components have issues; 3) Incorrect BIOS settings or damaged BIOS can also prevent the computer from starting, often caused by viruses like CH. In this case, it must be sent to the motherboard manufacturer for repair; 4) If network cards, modems, or other cards have issues, inserting them into the motherboard can cause a short circuit, preventing the computer from starting and potentially damaging the hardware inside the host.

10. Boot system error:

Problem phenomenon: A computer can complete self-check on boot and display relevant configuration information, but cannot boot from the hard drive. Problem analysis and handling: If self-check is completed but cannot boot from the hard drive, the first thought is that there is an issue with the hard drive. Therefore, a floppy disk is inserted into the floppy drive, intending to boot from A drive. However, the computer prompts that the floppy drive cannot read the disk. Restarting the computer and pressing [Del] to enter BIOS reveals that the boot order and hard drive parameters are correct. Upon checking other parameters, it is found that the BIOS is set to boot from a secondary drive, but the computer only has one hard drive connected. Therefore, changing the secondary drive option to “NONE” and saving before restarting resolves the issue.

11. System time slows down:

Problem phenomenon: A computer that has been in use for a long time recently shows a phenomenon where the system time slows down. After resetting the time, it slows down again after a few days. Problem analysis and handling: Since the system time is slowing down, it is suspected that the motherboard battery is dead. After replacing it with a new battery, the problem persists. Upon removing the motherboard for careful observation, signs of damage are found near the capacitor next to the motherboard battery, and this capacitor happens to be a component of the motherboard’s timing circuit. The timing circuit relies on the oscillation of a quartz crystal to calculate time, so it is suspected that the issue lies here. The solution is to first clean the circuit board near the timing circuit with anhydrous alcohol cotton. If the problem persists, replacing the capacitor and quartz crystal resolves the issue.

12. Serial port damage on the motherboard:

Problem phenomenon: A computer installed with Win2000 discovers that the mechanical mouse connected to COM1 cannot operate after starting. Problem analysis and handling: Initially thought it was due to dirt inside the mouse, leading to its malfunction. After cleaning the mouse, it still does not operate, but when connected to another computer, it works normally. Therefore, it is determined that the problem is not with the mouse but with the computer’s serial port or operating system settings. First, check the port settings in the operating system’s “Device Manager” and find no errors in the settings. It appears that the computer’s serial port is damaged, and connecting the mouse to another port resolves the issue.

Practical Tips for Troubleshooting Common Computer Issues

13. Motherboard battery dead:

Problem phenomenon: A computer shows no display and continuously emits “beep! beep!” sounds when not used for a period and then turned on again. Problem analysis and handling: First suspecting a memory issue, the memory module is placed in another computer and works without any problems. Therefore, it is suspected that the issue lies with the motherboard. Upon careful observation of the motherboard, no issues are found. Finally, it is suspected that the CMOS battery on the motherboard is dead, and after replacing it, the issue is resolved.

14. Motherboard not recognizing memory module:

Problem phenomenon: A computer using a modern 256MB memory module does not recognize the memory module on startup. Problem analysis and handling: Initially using substitution to check by inserting other memory modules into the motherboard, the same issue occurs, leading to the suspicion that the pins in the memory slot on the motherboard are faulty. Using a multimeter to measure reveals that one pin on the motherboard is disconnected from its corresponding chip. After soldering it back, the issue is resolved.

15. Power switch does not turn off:

Problem phenomenon: Pressing the power switch on the host during shutdown does not execute the shutdown operation but instead enters sleep mode. Using the operating system to perform a soft shutdown works normally. Problem analysis and handling: For ATX architecture computers, there is an option in the motherboard BIOS settings that determines the action of the power switch. It can be set to either shut down or enter sleep mode upon a single press. If it is set to enter sleep mode, holding down the power switch for more than 4 seconds is required to turn off the computer.

Practical Tips for Troubleshooting Common Computer Issues

1. How to enter the BIOS of a laptop:

Problem phenomenon: A second-hand COMPAQ laptop needs to enter the BIOS for some settings, but the shortcut key is unknown. Problem analysis and handling: Most laptops have different methods of entering BIOS compared to desktop computers, with most laptops using keys such as [F1], [F2], [F10], or [CTRL+ALT+ESC]. Additionally, many laptops can also set the motherboard BIOS through dedicated programs.

2. Unable to start after clearing CMOS:

Problem phenomenon: After modifying the hard drive parameters in the BIOS and saving, the system fails to start during self-check, and the speaker emits alarm sounds. After shutting down the computer, shorting the jumper on the motherboard to clear CMOS, and setting the jumper back to default, the power indicator light does not turn on, and the processor fan does not spin, making the computer unable to start. Problem analysis and handling: It is suspected that after turning off the computer and the switch, the computer power plug remains energized due to poor quality of the socket, leading to unsuccessful CMOS clearing. After unplugging the computer power from the socket and plugging it back in, turning on the computer power switch resolves the issue.

3. Long memory detection time during startup:

Problem phenomenon: After changing the motherboard once, every time the computer starts, the memory takes a long time to be detected before entering the operating system. Problem analysis and handling: Memory detection is a necessary process for computer startup. It is suspected that the “Quick Power On Self Test” option in the BIOS is not set to “Enable”, causing the memory to self-check three times. Setting it to “Disable” and saving and exiting allows for quick memory detection during startup.

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