Hi
Try
Flash Disinfector in order to be sure that you dont have some hidden virus inside.
http://www.precisesecurity.com/tools-resources/adware-tools/flash-disinfector/
then use Hp Tool to format againe and be sure that write is enabled on your device USB thet should be lock-unlock key!
or
HDD Low Level Format Tool
This freeware Low Level Format utility will erase, Low-Level Format and re-certify a SATA, IDE or SCSI hard disk drive with any size of up to 281 474 976 710 655 bytes. Will work with USB and FIREWIRE external drive enclosures.
Low-level formatting of Flash Cards is supported too. Low Level Format Tool will clear partitions, MBR, and every bit of user data. HDD Low Level Format Tool will utilize Ultra-DMA transfers when possible
Here are some key features of "HDD Low Level Format Tool":
· Supported interfaces: S-ATA (SATA), IDE (E-IDE), SCSI, USB, FIREWIRE. Big drives (LBA-48) are supported.
· Supported Manufacturers: Maxtor, Hitachi, Seagate, Samsung, Toshiba, Fujitsu, IBM, Quantum, Western Digital.
· The program also supports low-level formatting of FLASH cards using a card-reader
http://hddguru.com/
http://www.howtogeek.com/howto/windows-vista/registry-hack-to-disable-writing-to-usb-drives/
Start > Run > type ‘regedit’ (without the speachmarks) > Enter
- Single-click on ‘My Computer’ > File > Export > save it to the Desktop (Always best to have a backup!!)
- Go to the following:[/COLOR]
My Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDeviceP olicies
*There seems to be some spaces here in 'StorageDevicePolicies' in the text above, there shouldn't be, OK*
- Double click on the string ‘WriteProtect’ and change the ‘Value Data’ box to ‘0’
- Then: File > Export > save somewhere useful as something like ‘StorageDevicePolicies001.reg’
- You also need to do this for the strings in any folders called ‘ControlSet***’ (* = any Digit, i.e. 001, 002) – for example: Everything is the same, just change ‘CurrentControlSet’ to ‘ControlSet***’
My Computer\HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\StorageDevicePolic ies
*There seems to be some spaces here in 'StorageDevicePolicies' in the text above, there shouldn't be, OK*
- Save these to the same place as before as ‘StorageDevicePolicies00*’
The saves are in case it reverts at a later date, just double click (saying ‘yes’ to importing these to the registry) on all of the files and it will all work again!