I've just brought a brand new USB 32GB thumb drive (it was working at that moment), so I decided to format the drive to NTFS, but it takes ages (3 to 4 hours for 10% )and still haven't finish the formating.....so I aborted the format and use HP USB Disk Storage Format Tool to format it, but it keep saying that the USB thumb drive is having the write-protected on (in fact, it doesn't have the write-protect lock button at all)......so now I can't format (unable to complete the format) or use the drive at all.....also, if I use the format provided by Windows (right-click at the drive and choose "format") it will give me an error at the end...... Please help!!! SO MANY THANKS!!! It is a OEM product, the chip is a Samsumg chip. And I bought it on ebay.