What should I do if the Win7 card reader does not read?

We all know that mobile devices include USB flash drives and mobile hard drives. But sometimes we will read the phone memory card or camera memory card through the card reader. Recently, users of Win7 system, when using the card reader, there is a phenomenon that the card reader can not read the card, what is going on? Let me talk about the solution that Win7 reader can't read.

The solution is as follows:

1. Click on [Start - Control Panel - Add New Hardware - Find] on the original computer and find out if there is any external device, if any, you can open it. Hardware] Unload the driver, then insert the card reader and reinstall the driver.

2, of course, you can enter the safe mode, and then repair the registry, and then re-enter the normal mode to insert and remove the card reader, see the fault is resolved.

3, if the fault is still the same, then try to restore the computer to no failure, or repair the system disk, open a command prompt to enter SFC /SCANNOW Enter, and then insert the system disk repair. There is no need for us to fix it, the system will automatically detect the repair.

4, if the fault persists, set the CD-ROM drive in the BIOS to insert the system boot disk into the first boot device, press R to select “ repair installation & rdquo;

5, caused by the lack of USB power supply. This situation may be caused by too many external devices on the usb interface.

Solution: Right mouse button [My Computer - Device Manager - find the "Universal Serial Bus Controller" option, then there are some "usb Root Hub" options on the drop-down list of this option. ], as shown:

Double-click this option, then open the Properties dialog box, switch to the "Power Management" tab, remove the "Allow the computer to turn off this device to save power" Select, click OK.

The above is the solution that Win7 readers can't read. There are many reasons why the reader can't read it, but we can solve it by the exclusion method to see if it is a problem with the card reader. If it is a problem with the card reader, then I have bought a new one.