If this is a one off, @istheEnglishWay's suggestion to use a USB stick seems like a good bet.
If you suspect you might need to do this a few times, PXE booting might be a good option to consider.
I've used cobbler for similar needs, and found it to be suitable, and reasonably easy to setup and use.
It is, however, really only worth you time to do that if you feel you might do this a few times.
It is also possible to set up PXE with less overhead (especially if you can live with just having a default install pushed out each time), but install only DHCP (unless you already have something suitable) and a TFTP server.
One big caveat to this is you will need the laptop's wired interface to play nice, and that may not be the case (I can't speak for HP laptops, but I have had issues with lower-end Acer laptops when trying to use PXE).