Answer:
You need to copy the presentation from the old computer on to a Pen drive, or in some cloud service like Dropbox, Amazon, or any. Now on the new computer, you can upload from the pen drive, or you can log in to the cloud service, and upload it from there. However, uploading from the cloud service will require an internet connection. And hence the pen drive option is much better and safer. However, if you have internet service then cloud service is the best.
Explanation:
Please check the answer section.