Glad to know Dell Support were able to help speed up the computer's boot time. If Mcafee software is on computer, I suggest disabling software in your Task Manager (Startup). You can always come back and re-able it in future if you desire. Open Task manager > startup> disable Mcafee I see it's a hard drive (1TB HDD) that installed in the computer. After reinstalling windows 10, you still aren't satisfied with the boot time then I strongly suggest replacing the hard drive with a much speedy solid-state drive or keep the hard drive but add a solid-state drive for booting.  Please view Inspiron 3593 Storage Specification for additional information in link below: Inspiron 3593 Setup and Specifications | Dell US Also, check out the video in link below, hopefully this help with your decision with upgrading or adding an SSD to your computer: Dell Inspiron 15 3593 - SSD and HDD Upgrade and Repair ... Thanks for the update and sharing Dell model information.  Just in case you need it.... Inspiron 3593 Service Manual | Dell US
It takes 1 minute and 18 seconds to show logo before loading the win10. Is it a hardware issue?
Slow boot