You can do two things, first of all scan the drive for viruses. Some viruses have been known to cause a drive to be write protected and can make it a pain to access your files. If that doesnt work you can format your stick by going in to "My Computer" finding the thumb drive, right clicking and clicking the format option. If it wont allow you to do that, I really dont know what to do.
I have transelen pendrieve but it not formatted becaouse it is write protected so how to remove write protected
1. Shutdown your computer or laptop
2. Insert USB Memory Stick into your laptop or Computer
3. Turn on laptop and then immediately start pressing (F8) key then Advanced Boot Options screen will come up
4. Select Safe Mode with Command Prompt
5. After loading files if your USB Memory Stick drive letter is (G) for example then write as
6. C:\windows\system32>G: and press enter
7. G:\>format G: and press enter
8. If ask you (Y/N) then press (Y) and press enter
9. Now a full format will start which remove write protection from USB Memory Stick.
Before removing USB from your computer, Always remove it safely by going into to my computer then right click on USB and click eject.
I have a Transcend 16Gb pen drive and around 2 weeks ago my laptop began not reading it for some reason. I tried running the "chkdsk in Command Prompt" fix and had previously had success with an iOmega ex harddrive but when i used the same process on my Transcend i keep getting a volume corrupted error message. I have narrowed it down to my McAfee antivirus and then uninstalled it and intstalled Free AVG. Something i should of done a long time ago i might add!!
This has lead me to giving up and trying to format the drive so as i can change back from my drive now reading a Raw file system to NTFS. I have tried your option above but i'm getting a message "The volume does not contain a recognized file sustem. Please make sure that all required file system drivers are loaded and that the volume is not corrupted".