Spin down way too soon

hi all, i have a my book essential about 4 yrs old. everything has worked fine all this time except the other day when i hooked it up to my new computer, a microsoft surface. now it spins down after only 30-45 seconds even while i’m doing something in the hard drive. i click on a photo and look at the photo for a moment and all of a sudden i hear it spin down almost immediately, then i’ll go to move on to the next photo and it delays. was it perfect timing that the my book is starting to fail? was it the move to the new computer? can i change the settings to let a longer period of time of inactivity?
i’m not sure what to do. if anyone has a solution or troubleshoot action i’d appreciate it. thank you, John in MA

Hello

Hello you can setup the sleep timer for your drive using the WD Drive Utilities app. Check the link below for the steps.

How to set up and use WD Security & WD Drive Utilities:
https://support.wdc.com/knowledgebase/answer.aspx?ID=10408&lang=en