Typical manifestations of hardware resource conflicts: When you add new hardware or after adding new hardware, the system often crashes and blacks the screen for no reason; when starting, it enters safe mode without reason; the sound card and mouse cannot work normally or strike completely; when pressing and holding down the "Alt" key and double-clicking the My Computer icon with the mouse to view system properties, an exclamation mark appears; the printer and floppy drive work abnormally. Of course, computer viruses cannot be ruled out, because similar phenomena will occur when some viruses occur, so they cannot be generalized.
The main reason for hardware conflict: When adding new hardware, the newly added hardware occupies computer resources such as IRQ interrupts, DMA channels, I/O addresses of the original device, and a resource conflict occurs between the old and new hardware. This will result in the consequences of one or more hardware devices not working properly or the system is unstable.
How to check resource conflicts: first hold down the "Alt" key, double-click "My Computer/System Properties" with the mouse to check the working status of the hardware device. Generally speaking, if there is a problem with the system, the following three prompts will usually appear: 1. After formatting the hard disk and reinstalling the system, a yellow "?" appears. Its meaning is: hardware driver error or resource conflict. 2. When adding new hardware to your system, the blue "!" sign with a circle appears. Its meaning is: the device can basically be used, but the system believes that it has problems and can still work normally. 3. When adding new hardware to the computer system, it leads to serious conflicts and the red "×" sign appears. It means: this device does not work or the device does not exist, it will cause the system to start frequently in "safe mode" or often remind you to search for new hardware at startup.
As far as I know, the hardware that causes conflicts in computer hardware resources are mainly between the PCI1 slot or between the PCI slot and the mouse interface, COM1 and COM2, as well as between the ISA slot and the parallel port of the printer LPT1. The conflict between the graphics card and the motherboard is easier to judge. Generally, the system often starts in "safe mode" or reminds you to search for new hardware when booting; often reminds you to search for the latest drivers of the graphics card. For example: The conflict between the I740 graphics card and the use of the VIA693 chip motherboard. There are also conflicts between AGP graphics cards and PCI sound cards, but such conflicts are rare.
Hardware resource conflicts are not difficult to resolve, but the preferred solution is to be able to replace the hardware that causes the conflict. If the conditions do not allow it, you have to use the following method to solve it.
1. Change the hardware resource settings
Step 1: Click "Start/Settings/Control Panel" and double-click the "System/Device Manager" tab. After clicking the device in question, click the Properties button. Enter the property settings window of the device, and select the "Resources" tab; use a pen to record the problematic IRQ interrupts, I/O addresses and DMA channels in the "Resources" tab on paper as backup.
Step 2: Modify the hardware resource configuration. In the Resources tab of the device's Properties Settings window, select Manual Configuration. Before configuration, we should first understand some hardware knowledge and the usage of hardware resources. Generally speaking, large resource occupants should first recommend sound cards, which occupy at least one IRQ interrupt, two DMA channels and multiple I/O addresses; followed by SCSI cards, which occupy part of the I/O addresses, one IRQ interrupt and one DMA channel; and MODEM cards and network cards are both larger system resource occupants. When modifying the hardware resource configuration, we should first find the device in question. Generally, in the Device Manager window of system properties, you will find the three prompts mentioned above. And select the corresponding solution for each prompt.
The first type: yellow "?". For this kind of prompt, you should first download the latest driver of the device online. After downloading, first delete the device in the "System Properties/Device Manager" window, and click the "Refresh" button in the "System Properties/Device Manager" window. Follow the prompts to reinstall the driver. Then, in the System Properties/Device Manager window, see if that yellow "?" still exists. However, strictly speaking, this conflict does not belong to a conflict in the true sense. The main reason for it is that the system does not correctly identify the hardware, or the driver is incorrect. However, there are exceptions, that is, the driver conflicts with the system software, and upgrading the driver can generally solve this problem.
The second type: the blue "!" symbol with circles. This prompt indicates that the hardware can work and the driver is installed correctly, but part of the device conflicts with other hardware in the system. Generally, this conflict can be resolved by replacing the slots of the hardware. I have encountered an instance of a PCI 64/128 sound card conflicting with an Acer3D mouse. I used two ways to resolve the conflict. The first method is to select the device in question in the System Properties/Device Manager window and click the Properties button, and then select the Resources tab. First remove the hook before the Use Automatic Settings item, then select the device in question and click the Change Settings button. In the device properties window that pops up, select a "value" without conflicts and click the OK button. After restarting, the problem will be resolved. The second method: In the BIOS, changing the interrupt of this device can also solve the problem.
The third type: red “×” sign. It means that the hardware is damaged or that the hardware has a serious conflict with the system. It is no longer used normally now. Replacing the slot of the hardware can also solve this problem. There is an example: I used MSI 6199VA motherboard. At that time, the PCI1 slot was plugged into an innovative PCI64 sound card, which conflicted with the sound card when adding a "Golden Netba" MODEM card. The conflict was resolved after repeated slot replacements. Some non-plug and play devices can resolve conflicts by setting jumpers on the board. For example, some old SCSI hard disk interface cards can solve conflict problems by setting the jumper on the SCSI card. You can also modify the values of the IRQ interrupt, DMA channel, and I/O address of the device in the "System Properties/Device Manager" window to solve this problem.
2. Replace the slot
Replacing the slot is a simple and effective method. As we all know, the compatibility of VIA motherboards is not very good, so friends who use VIA chip motherboards should pay attention to compatibility issues when purchasing hardware. If you have five PCI slots on your motherboard, when you use more than two PCI devices, try not to use PCI1 slots to avoid conflicts. When you add a new device, you should also read the instructions for the device in detail.
3. Set up the BIOS
When neither of the above methods can resolve your conflict problem, you can try to block some unused device ports in the BIOS, such as "serial port (COM1, COM2), parallel port (LPT1) and infrared interface, etc. You can also block the USB port when necessary. At the same time, you can also set PNP OS Installed in the BIOS to Yes, which can allow the operating system to reset the interrupt.
The main reason for hardware conflict: When adding new hardware, the newly added hardware occupies computer resources such as IRQ interrupts, DMA channels, I/O addresses of the original device, and a resource conflict occurs between the old and new hardware. This will result in the consequences of one or more hardware devices not working properly or the system is unstable.
How to check resource conflicts: first hold down the "Alt" key, double-click "My Computer/System Properties" with the mouse to check the working status of the hardware device. Generally speaking, if there is a problem with the system, the following three prompts will usually appear: 1. After formatting the hard disk and reinstalling the system, a yellow "?" appears. Its meaning is: hardware driver error or resource conflict. 2. When adding new hardware to your system, the blue "!" sign with a circle appears. Its meaning is: the device can basically be used, but the system believes that it has problems and can still work normally. 3. When adding new hardware to the computer system, it leads to serious conflicts and the red "×" sign appears. It means: this device does not work or the device does not exist, it will cause the system to start frequently in "safe mode" or often remind you to search for new hardware at startup.
As far as I know, the hardware that causes conflicts in computer hardware resources are mainly between the PCI1 slot or between the PCI slot and the mouse interface, COM1 and COM2, as well as between the ISA slot and the parallel port of the printer LPT1. The conflict between the graphics card and the motherboard is easier to judge. Generally, the system often starts in "safe mode" or reminds you to search for new hardware when booting; often reminds you to search for the latest drivers of the graphics card. For example: The conflict between the I740 graphics card and the use of the VIA693 chip motherboard. There are also conflicts between AGP graphics cards and PCI sound cards, but such conflicts are rare.
Hardware resource conflicts are not difficult to resolve, but the preferred solution is to be able to replace the hardware that causes the conflict. If the conditions do not allow it, you have to use the following method to solve it.
1. Change the hardware resource settings
Step 1: Click "Start/Settings/Control Panel" and double-click the "System/Device Manager" tab. After clicking the device in question, click the Properties button. Enter the property settings window of the device, and select the "Resources" tab; use a pen to record the problematic IRQ interrupts, I/O addresses and DMA channels in the "Resources" tab on paper as backup.
Step 2: Modify the hardware resource configuration. In the Resources tab of the device's Properties Settings window, select Manual Configuration. Before configuration, we should first understand some hardware knowledge and the usage of hardware resources. Generally speaking, large resource occupants should first recommend sound cards, which occupy at least one IRQ interrupt, two DMA channels and multiple I/O addresses; followed by SCSI cards, which occupy part of the I/O addresses, one IRQ interrupt and one DMA channel; and MODEM cards and network cards are both larger system resource occupants. When modifying the hardware resource configuration, we should first find the device in question. Generally, in the Device Manager window of system properties, you will find the three prompts mentioned above. And select the corresponding solution for each prompt.
The first type: yellow "?". For this kind of prompt, you should first download the latest driver of the device online. After downloading, first delete the device in the "System Properties/Device Manager" window, and click the "Refresh" button in the "System Properties/Device Manager" window. Follow the prompts to reinstall the driver. Then, in the System Properties/Device Manager window, see if that yellow "?" still exists. However, strictly speaking, this conflict does not belong to a conflict in the true sense. The main reason for it is that the system does not correctly identify the hardware, or the driver is incorrect. However, there are exceptions, that is, the driver conflicts with the system software, and upgrading the driver can generally solve this problem.
The second type: the blue "!" symbol with circles. This prompt indicates that the hardware can work and the driver is installed correctly, but part of the device conflicts with other hardware in the system. Generally, this conflict can be resolved by replacing the slots of the hardware. I have encountered an instance of a PCI 64/128 sound card conflicting with an Acer3D mouse. I used two ways to resolve the conflict. The first method is to select the device in question in the System Properties/Device Manager window and click the Properties button, and then select the Resources tab. First remove the hook before the Use Automatic Settings item, then select the device in question and click the Change Settings button. In the device properties window that pops up, select a "value" without conflicts and click the OK button. After restarting, the problem will be resolved. The second method: In the BIOS, changing the interrupt of this device can also solve the problem.
The third type: red “×” sign. It means that the hardware is damaged or that the hardware has a serious conflict with the system. It is no longer used normally now. Replacing the slot of the hardware can also solve this problem. There is an example: I used MSI 6199VA motherboard. At that time, the PCI1 slot was plugged into an innovative PCI64 sound card, which conflicted with the sound card when adding a "Golden Netba" MODEM card. The conflict was resolved after repeated slot replacements. Some non-plug and play devices can resolve conflicts by setting jumpers on the board. For example, some old SCSI hard disk interface cards can solve conflict problems by setting the jumper on the SCSI card. You can also modify the values of the IRQ interrupt, DMA channel, and I/O address of the device in the "System Properties/Device Manager" window to solve this problem.
2. Replace the slot
Replacing the slot is a simple and effective method. As we all know, the compatibility of VIA motherboards is not very good, so friends who use VIA chip motherboards should pay attention to compatibility issues when purchasing hardware. If you have five PCI slots on your motherboard, when you use more than two PCI devices, try not to use PCI1 slots to avoid conflicts. When you add a new device, you should also read the instructions for the device in detail.
3. Set up the BIOS
When neither of the above methods can resolve your conflict problem, you can try to block some unused device ports in the BIOS, such as "serial port (COM1, COM2), parallel port (LPT1) and infrared interface, etc. You can also block the USB port when necessary. At the same time, you can also set PNP OS Installed in the BIOS to Yes, which can allow the operating system to reset the interrupt.