iPod without internet, on lock mode, and doesnt let passcode?

Hi!

My ipod 5 has been disabled through lock mode on the computer, though the ipod has no internet.

I don't know how to turn off lock mode on the computer, and the ipod doesn't allow me to give a password.

Last thing I want to do is reset it because I don't want to lose pictures and texts.

Please help me asap... thanks!