Hi, Im a student, and want to learn how to use hortonworks
Please check if you are meeting the minimum hardware/Software requirement to run the HDP Sandbox?
Minimum 8GB RAM you should have on your 64 bit OS to run the Sandbox without any issue.
Please see the NOTE from our doc: https://hortonworks.com/hadoop-tutorial/learning-the-ropes-of-the-hortonworks-sandbox/
Additionally, before starting the Sandbox please make sure that you double check the "md5sum" result as mentioned in the link:
Sometimes the download gets corrupted and hence the md5sum does not match.
Also please have a look at the release notes of Sandbox for more details: https://hortonworks.com/tutorial/hortonworks-sandbox-guide/section/1/