Now very many electronic devices forTheir work is based on solid-state memory (flash) cards. And it's not just about mobile phones and digital cameras. Many video camera manufacturers are also increasingly offering models in which the digital stream is stored directly on the flash memory. In light of this, it becomes clear why all modern laptops and their fellow netbooks with tablets are equipped with a built-in module for reading flash memory cards in 90% of cases. Surely everyone has heard the term "card reader". Actually, this is this module - Card (card) Reader (reader). If the card reader does not work, the convenience of working with devices is significantly reduced. For example, instead of directly copying files from the camera card, you have to use an adapter cord. The reasons for which the card reader does not work can be very different. Today we will review the main of them and give recommendations on how to restore efficiency.

In general, all causes can be divided into several large groups:

- Hardware. This includes connection errors, damage to the logical part, misuse, related malfunctions;

- software. Typically, this is the operating system or driver;

- mixed.

If there are problems with reading cards first actionalways install the driver on the card reader. This is especially true for laptops. Without a driver (control program), the card reader can not work, and in the system itself it is defined as an unknown device. The solution is to identify the manufacturer of the card reader (specified in the instructions), for example, Ricoh, and download the appropriate driver. Owners of laptops can run a support disk that comes bundled, or go to the manufacturer's site of their laptop computer, in the download section to specify their model and download the necessary drivers. And only after installing the drivers we check the hardware part.

Card readers can be external and internal(built-in). Despite this difference, they all connect to the USB bus. In the internal computer modules for card reading on the back side there is a special cable with a socket-connector on the end. The socket is connected to the corresponding USB pins on the motherboard. Therefore, if the card reader does not work, then it is necessary to check the correct connection of the connector (we open the instruction to the card). Although in most cases there is a lock from improper inclusion, however, precedents sometimes occur. With external card readers it's easier - the standard USB "on the contrary" simply does not include. Also, the built-in card reader does not work if USB ports are disabled in the BIOS settings. In personal computers, to enter the BIOS, you must press the Delete (Del) button immediately after switching on. It is recommended to read the instruction manual for the motherboard and set the settings in accordance with the instructions in it. If the card reader does not work even then, then switch it to another free port. Advantage of computer card readers in their simple replacement in case of breakdown.

A slightly more complicated situation, if not workingcard reader on a laptop. Due to the high degree of integration of the components, local overheating often occurs, as a result of which part of the USB ports fail. In this case, not only the card reader stops working. As in laptops to switch the built-in device to another connector is problematic, you need to make sure that the driver is installed, try another memory card, rearrange the operating system (sometimes helps).

When using card readers, two important points need to be considered:

- The USB hub has a current limitation,so a large number of lumped devices can cause malfunctions in their operation. Conclusion - for checking disable printers, scanners, flash drives, phones, and leave only the card reader;

- SD and SDHC cards are only partially compatible. The SD reader does not have to be able to work with the new SDHC.