SanDisk Cruzer Blade 16GB write protected error

Check your sd card if it is a FAT32 format drive, then manage your disk management by going to Start menu, right click My Computer, click Manage and look for Disk Management. You can see there the drive of your SD card showing FAT32, right click the SD card drive and format (make sure you backup your files). Change FAT32 format to NTFS, thick quick format and wait when its done. That’s it, you now have a working SD card. Good luck!