What is the reason why the memory card is showing an abnormality?

The first thing to see is whether your memory card is new or old The new card needs to be formatted with the machine for the first time before it can be used If the old card prompts abnormal storage, you can first use the card reader to read it on the computer to see if you can deny the memory card, and if it can be used normally, it may be that the camera itself is faulty, if it cannot be used normally, it should be that the card is faulty. In addition, now many people like to use the card tray + TF card instead of the memory card, it is recommended not to use it like this, the card tray is easy to be damaged and stuck inside the machine. There is also whether the memory card is a licensed card or a parallel card, which will also affect the storage function to a certain extent.

There are several reasons for SD card abnormality:

1. Poor contact of SD card;

2. SD card and mobile phone are not compatible;

3. Poor contact of SD card holder.

1. If the SD card is in poor contact, take out the SD card and turn it off again and put it on the phone. Or take out the SD card and wipe it with an eraser and put it on your phone.

2. The SD card is not compatible with the mobile phone, so it is recommended to do the card machine exchange.

3. The contact of the SD card holder is poor, it is recommended to bring the relevant documents and invoices to the outlets for inspection and maintenance by the Chongzu engineer.

Fault 1: Poor contact between the memory module and the motherboard socket and the failure of the memory controller are manifested as a crash after the host power is turned on and the screen displays an error message "error: unable to controla20 line".

Workaround: Double-check that the memory module is in good contact with the slot or replace the memory module.

Fault 2: The self-test passes. When running an application in DOS state, the memory allocation error is caused by a conflict in the occupied memory address, and the screen displays a message "memory A11OCATIONERROR".

Solution: Because the memory is not used in the file, the memory management file is set or the memory is set improperly, so that the system can only use 640kb basic memory, and the running program will appear "out of memory" (insufficient memory) prompt, which cannot be manipulated. These phenomena are all soft faults, and you can restart the XP system after writing the system configuration file.

There are several reasons for SD card abnormality:

1 If the SD card is not in good contact, take out the SD card and turn it off again and put it on the phone.

2 Take out the SD card, wipe it with an eraser, and put it on your phone.

3 SD card and mobile phone are not compatible, it is recommended to do card machine exchange.

4. The SD card holder is not in good contact.

In the fourth case, it is recommended to bring the relevant documents and invoices to the network engineer for inspection and maintenance.

There are several reasons for SD card abnormality:

1. Poor contact of SD card;

2. SD card and mobile phone are not compatible;

3. Poor contact of SD card holder.

1 If the SD card is not in good contact, take out the SD card and turn it off again and put it on the phone. Or take out the SD card and wipe it with an eraser and put it on your phone.

2. The SD card is not compatible with the mobile phone, so it is recommended to do the card machine exchange.

3. If the contact of the SD card holder is poor, it is recommended to bring the relevant documents and invoices to the network engineer for inspection and maintenance.

It should be a problem with the memory card, the quality of the memory card is not good, or it is damaged, just format it, but if it doesn't work, you can only change the memory card!