Open U disk in Win7 system to display I /0 device error can not make this request

U disk is a very high-usage storage device. Due to its extensive use, U disk also has many problems in use. For example, if you open U disk in Win7 system, it shows I/0 device. Wrong, unable to make this request, and unable to access the fault, how can we fix this problem? Since the i/0 device error is caused by the U disk damage in many cases, we can perform the following operations if the U disk is determined to be no problem. No one can set the system to fix the physically damaged U disk. It is.
concrete steps to solve:
1, first right-click on the desktop & rdquo; & ldquo ;, computer in the pop-up menu bar options, select & ldquo; management & rdquo ;;

2, enter & ldquo; & ldquo; computer management & rdquo; & rdquo; later, we again open window, click & ldquo; disk management & rdquo; to expand;

3, and then locate the letter u disk, right-click the u disk, select & ldquo ; change drive letter and paths & rdquo; in the pop-up window, click & ldquo; change & rdquo; button;

4, click on the & ldquo; assign the following drive letter (a) & rdquo ;, then by the right of the & ldquo; drop-down menu & rdquo Re-designate a disk drive letter and finally click the “OK” button. The method can not open fault; that is, win7 system to re-assign a drive letter to solve the U disk U disk & ldquo by

described above; I /O device error & rdquo.