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What to do if the SD card cannot be read by the win10 computer_Solutions for the win10 system to not recognize the SD card
What to do if the SD card cannot be read by the win10 computer_Solutions for the win10 system to not recognize the SD card
Sep 24, 2025 pm 05:27 PM
First check the physical connection and lock switch of the SD card to ensure it is inserted correctly and is not locked; then enable or restart the card reader device in the Device Manager; then update or reinstall the driver; run sfc /scannow to repair the system files; finally assign a drive letter or online to the SD card through disk management.
If you try to plug an SD card into a Windows 10 computer, but the system cannot recognize or read the device, it may be caused by a driver problem, a hardware failure, or an abnormal connection. Here are the specific steps to resolve this problem:
The running environment of this article: Dell XPS 13, Windows 10.
1. Check physical connection and lock switch
Ensuring good physical contact between the SD card and the reader is the first step to troubleshooting. Loose connections or incorrect installation methods can cause the device to be undetected.
1. Remove the SD card, check whether there is a write-protect switch on the side, and make sure that the lock switch is not in the LOCK position . If so, please turn it into the unlocked state.
2. Reinsert the SD card to make sure the card is fully entered the slot and is not tilted. A slight "click" sound indicates that it is in place correctly.
3. If using an external USB card reader, try changing the USB port and make sure the card reader is connected securely.
2. Enable or restart the SD card reader device
Windows may have disabled the card reader device due to power management settings or temporary errors, and manually enable it to restore its functionality.
1. Right-click the "Start" button and select "Device Manager".
2. Expand the "Portable Device" or "Universal Serial Bus Controller" category to find devices with SD card identification or exclamation mark.
3. Right-click the device. If the "Enable Device" option appears, please click to activate it; if "Disable Device" is displayed, skip this step.
4. If there is no response, right-click and select "Uninstall Device" and restart the computer. The system will automatically reinstall the driver when it is started.
3. Update or reinstall the SD card driver
Outdated or damaged drivers can prevent the operating system from recognizing hardware, and updating or reinstalling can fix such problems.
1. Find the SD card reader device in "Device Manager" and right-click to select "Update Driver".
2. Select "Automatically search for updated driver software" to let Windows find the latest version that is adapted online.
3. If the automatic update fails, visit the official website of the computer manufacturer, download the latest card reader driver according to the model and install it manually.
4. If it is still invalid, perform the "Uninstall Device" operation and restart the computer, triggering the system to automatically reinstall the driver.
4. Run the system file check tool
Corruption of the system core file may cause hardware identification exceptions, and scanning and repairing can restore system integrity using SFC tools.
1. Find cmd.exe in the C:\Windows\System32 directory and right-click to select "Run as administrator".
2. Enter sfc /scannow in the command prompt window and press Enter to execute.
3. Wait for the scan to complete (it may take several minutes), and the system will automatically repair the found corrupt files.
4. After the repair is completed, restart the computer and insert the SD card again to see if it is recognized.
5. Use disk management tools to detect SD card status
Through disk management, you can check whether the SD card is recognized as a storage device by the system, and it can confirm its existence even if the drive letter is not allocated.
1. Right-click the "Start" button and select "Disk Management".
2. Look for the newly appeared disk in the disk list and confirm that its capacity is consistent with the nominal value of the SD card.
3. If the disk appears as "Unallocated" or the disk letter is missing, right-click the partition, select "Change drive letter and path", and assign it an available disk letter.
4. If the disk status is "Offline", right-click the disk name and select "Online" to activate the device.
The above is the detailed content of What to do if the SD card cannot be read by the win10 computer_Solutions for the win10 system to not recognize the SD card. For more information, please follow other related articles on the PHP Chinese website!
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