How to use the motherboard test card
In computer repair and troubleshooting, the motherboard test card (also called Debug card or POST card) is a very practical tool. It can help users quickly diagnose motherboard failures, especially when the computer cannot start normally. This article will introduce in detail how to use the motherboard test card, and provide you with a comprehensive guide based on hot topics and hot content in the past 10 days.
1. Basic principles of motherboard detection card

The motherboard detection card reads the POST (Power-On Self-Test) code sent by the motherboard BIOS during the startup process and displays the code on the digital tube or LED screen on the card. Users can use these codes to determine the fault point that occurs during computer startup.
2. How to use the motherboard test card
1.Preparation: Make sure the computer is turned off and the power cord is unplugged.
2.Install test card: Insert the motherboard detection card into the PCI or PCI-E slot of the motherboard (the specific slot type depends on the detection card model).
3.Start the computer: Turn on the power, turn it on and observe the code displayed on the detection card.
4.Interpret the code: According to the code displayed on the test card, refer to the instruction manual or check the cause of the fault online.
5.Troubleshooting: Step by step troubleshoot hardware or software problems according to the code prompts.
3. Common POST codes and their meanings
| code | meaning |
|---|---|
| 00 | CPU is not working properly |
| FF | Motherboard or BIOS failure |
| C1 | Memory test failed |
| D2 | Graphics card failure |
| AA | System starts normally |
4. The correlation between the hot topics in the past 10 days and the motherboard test card
Recently, as the price of computer hardware has dropped, the DIY installation craze has risen again. Many users encounter startup problems when assembling computers, and the motherboard test card has become one of the popular tools. The following are hot topics related to motherboard testing cards in the past 10 days:
| hot topics | Related content |
|---|---|
| DIY installation troubleshooting | Application of motherboard detection card in the installation process |
| Computer won't start | How to quickly locate problems through POST code |
| BIOS update failed | The role of detection cards in BIOS recovery |
| Second-hand hardware inspection | Use test cards to verify motherboard health |
5. Suggestions for purchasing motherboard test cards
1.Compatibility: Choose a detection card that supports PCI or PCI-E slots to ensure compatibility with your motherboard.
2.code base: Give priority to test cards with detailed code descriptions, or ensure that the manufacturer provides online code query services.
3.Brand recommendation: Common brands on the market include MSI, ASUS, etc. The quality is more guaranteed if you choose a well-known brand.
6. Precautions
1. When using the motherboard detection card, make sure the computer power is disconnected to avoid the risk of electric shock.
2. The POST codes of different motherboards may be slightly different. It is recommended to refer to the code manual provided by the motherboard manufacturer.
3. If there is no display on the detection card, it may be that the detection card itself is faulty or there is a problem with the motherboard power supply.
7. Summary
The motherboard test card is an indispensable tool in computer repair, especially suitable for DIY users and professional repairers. Through the introduction of this article, you should have mastered the basic method of using the motherboard detection card. Combined with recent hot topics, we can see the importance of motherboard detection in areas such as installation and troubleshooting. I hope this article can help you better use the motherboard test card and quickly solve computer problems.
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