There are many reasons why the reader can't read it, but we can solve by elimination, first of all, to see if the card reader is the problem, that is, insert cards into the reader and then inserted into the computer, if the front interface is not responding, switch to plug in after the interface bar, if the back of the interface is still not read out, Then a computer will be plugged in and unplugged. If normal, the explanation is the original computer reason, if not normal is the reader's reason.
If you insert a card reader in another computer, the card reader is normal, then the original computer failed. Computer Setup Failure Solution:
1, then to the original computer click "Start-Control Panel-Add New hardware-find" and then find out if there is no external equipment, if any, you can open click "Hardware" will be driven to unload, and then insert the card reader, reinstall the driver.
2, of course, can enter into Safe mode, and then repair the registry, and then re-enter the normal mode to plug the card reader, to see the failure resolved.
3, if the failure is still the case, then try to restore the computer to the failure of the time, or the electrical system disk repair, open a command prompt input Sfc/scannow carriage return, and then insert the system disk repair. There is no need for us to fix it, and the system will automatically detect the fix.
4, if the failure is still, set the optical drive in the BIOS for the first boot device Insert system installation disk press R to select "Repair Installation" can be.
5, the lack of USB power supply causes. This may be caused by too much external devices on the USB interface. Workaround: Right mouse button "My Computer-Device Manager-Locate the Universal Serial Bus Controller" option, and then there are some "USB Root Hub" options on the dropdown list for this option, as shown in the figure:
Double-click this option, and 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" before the check, OK.
If the card reader fails, check to see if the data cable connection is broken. Then there is the failure of the interface. Try to change the interface. Of course, the small part of the proposed card reader is not very expensive, change a card reader bar. What the problem was solved.