We always stress the importance of having students save their work to an external device, since it won't be saved on the computer once it is restarted. We have a couple of options that we've recommended to students over the semesters: checking out an external hard drive and having them send the document to themselves using UD's Dropbox service. Something else you might want to consider is referring them to cloud storage, where people can save their data to a remote server. The NYTimes has a good article that goes over several free and paid options for saving information to the cloud. Here are some options, in a nutshell:
Google Drive
SkyDrive from Microsoft
Dropbox.com
SugarSync
Google Drive
SkyDrive from Microsoft
Dropbox.com
SugarSync