"Hi I have a Acer Laptop and it is telling me PXE-M0F: Exisiting PXE Rom No bootable device
It's trying to boot from your laptop's networking adapter (boot over LAN) because it can't find any other bootable device. Obviously you don't have it setup for network boot so that fails too, as we would expect it to.
It may mean that the laptop's hard drive has failed, for confirmation you need to test it before looking elsewhere:
Try testing the hard drive with SeaTools for DOS
which loads from a bootable CD which you make from the downloadable CD image. The direct download link is on this page, as is the guide to using the software:
It doesn't matter which model PC or laptop you use to create the SeaTools bootable CD, it will work on your laptop no problem.