Why is the USB stick "write protected"?

USB stick into the computer always appear "U Disk is write protection" error, but the USB stick does not write the protection of the switch, what is the reason?

First, modify the registration form

1. Open the registry Win+r (that is, start-run) type Regedit.exe

2. Enter the following directory Hkey_local_machinesystemcurrentcontrolsetcontrolstoragedevicepolicies

If there are no storagedevicepolicies entries, this is established

3. Establish a DWORD value named Writeprotect and make it a value of 0

4, restart can

Second, My Computer (right-click)-Management-Disk Management-Select the USB stick right-click to delete after formatting.

If none of the above methods are possible, try the following method:

Convert USB flash drive from FAT32 format to NTFS format.

If your USB stick is on the computer, it is an L: Disk for example

1, Win+r input cmd.exe (that is, start dos,windows inside) can also be attached to the command prompt;

2. Using the Convert command, note that the convert command cannot convert to the current disk so that it operates under any drive letter other than L: for example, D: Disk directory;

3. Enter the following command convert L:/fs:ntfs/nosecurity/x