In that case you can follow the below steps for removing the write protection from your Sandisk Cruzer blade.
- First turn your system off, Insert your Sandisk Cruzer blade and turn it on and start pressing (F8) key immediately for entering Advanced Boot Options screen.
- When you get the Advanced Boot Options screen then just Select Safe Mode with Command Prompt and enter the below commands:
C:\windows\system32>G: and press enter
G:\>format G: and press enter
Here (G) is the Sandisk Cruzer bladeletter.
- If you get a prompt saying (Y/N) then press (Y) and hit enter and now the formatting process will get started and write protection will be removed.
Just try out the same and let me know if the issue is getting solved that way. Hope that helps.