New
#11
Even if a Dell is purchased from a retail store, instead of direct from Dell, the Dell warranty still applies. The first step should have been to call Dell support. Whatever the problem, only Dell can take care of the problem under warranty. Any 3rd party, including in this case Best Buy, is free to charge whatever (or for good customer relations do it free) if an at additional cost Best Buy warranty was not purchased.
FWIW, here is the link to the Dell Manual for this model.
Support for Inspiron 24 5488 | Manuals & documents | Dell US
Probably too late now, but there is a procedure, accessed from Windows, to create restore media in case it is needed. I did that on my new Dell Inspiron laptop (received in August). Created a USB Flash Drive recovery media.