How do I load software on my notebook computer which does have a disk drive ?

Well you can't as there is nowhere to store the information.
Best idea would be to acquired a "new" hard drive.

What make and model and how old is it?
What do you mean by "disk drive?" If you mean that your laptop does not have a CD drive then you will need to buy (or borrow) a USB CD drive. If your laptop is less than 3 years old (or so) you should be able to boot a Windows install disk from a USB CD drive. If the laptop is older then the BIOS might not be able to boot from the USB drive. Depends on the model. Older laptops often had the CD drive in the docking station but I am assuming you don't have the dock station.