Hi Terri50, and welcome to the forum
What are you tryng to do with the system .. get it working again (password reset), or just access what's on it ?
Be aware, resetting the password shouldn't be too difficult, but if the home folder was encrypted the chances of getting the data off it are slim at best.
If all you want is the data (files/pics/etc.) you best bet would probably be to use a LiveCD to gain access to the file system.
Do you know which Linux distribution it is ? (examples - Ubuntu, Mint, Fedora, Suse, Arch, etc.)