Can you give us more details? Were the files you lost on your PC committed into Subversion? If they were, you should be able to recover them even if they were deleted on your laptop.
Were these files uncommitted local files? Probably no way to get them back. However, Subversion rarely deletes stuff willy-nilly. Modified files are updated when an update is done and modified sections are never deleted. If a file isn't in the repository, it will never be deleted when an update is done even if a file of the same name was created in the repository. In that case, you'll get a conflict.
Maybe a future hint: Use Dropbox for your Subversion working directory if you're moving back and forth between two machines. Dropbox automatically syncs the two directories -- even Subversion working directories. Plus, it stores a history of the file changes outside of Subversion. You cannot, no never, do not, not allowed, don't do, use a Dropbox directory with Subversion at the same time on two machines. However, if you are merely going back and forth between two systems, it works pretty good.