If these steps are not wrong, then you have to replace a USB connection line to detect. If not, you can enter the "device manager" in the computer, right click the mouse, scan for hardware changes, and reinstall the driver about digital camera. If still not, you just at the time when the computer boot press del key to enter the CMOS management interface, see USB equipment external function is normal enabled. If the above steps are carried out, still can not solve the problem, then chances are your digital camera itself problems, suggest you repair, or buy a special card reader to read the digital camera memory pictures of Cary.