USB disk can not connect to the computer solution

u disk only by inserting the computer can query u disk data file, but recently a friend in the use of U disk, U disk how also not connected to the computer, this is how it? USB disk can not connect, you can not copy the copy of the document, how to do?

One, USB is not recognized by the computer, if the system or system with the driving reasons, you can repair the following method.

1, the boot press F8 into Safe mode after the exit, select Restart or shutdown in the boot, you can enter the normal mode (repair the registry).

2, if the failure is still, please use the system with the System Restore, restore to you did not appear this time of failure repair (if normal mode recovery failure, please turn on the F8 into Safe mode to use System Restore).

3, if the failure is still, using system disk repair, open a command prompt input Sfc/scannow return (SFC and/between a space), insert the original system disk repair system, the system will be automatically compared to repair.

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, if the failure is still, it is recommended to reload the operating system.

Second, if there is a letter but not shown, the solution.

1, right-click My Computer/management/storage/Disk Management, and then right click on the removable disk icon,

2, click the "Change Drive and path" option on the shortcut menu and click the "Add" button in the subsequent interface,

3. Next select "Assign Drive letter" and select the appropriate letter from the Drop-down list next to the option, and click OK.

4, finally open My computer, you can see the drive to move the disk letter.

Third, if the failure is still, may have the following reasons.

1, change the interface to try;

2, the computer has not been plugged in before the boot try.

3, the computer USB interface has problems, to take the motherboard to repair;

4, the power supply has the problem;

5, the motherboard circuit problems.

Users want to solve the U disk can not connect the computer problem, the first to understand what causes the U disk can not connect, only to find the root cause of the problem, can correctly solve the problem.