memorex 4gig usb card cannot reformat

[fred54321]

im running norton 360 and it as used my I drive as backup for norton 360 when usb card not installed it still says I drive (norton backup drive) if i put my memorex usb flah drive in cannot put anything on it or format say read write protected.
cheers

 

[fred54321]

i never get a answer on these forums norton 360 took up my I drive for backup ive switch it of it might be write protected can u change this in windows 7 i im putting my usb stick in cannot format it at all