There is really no way to tell one way or the other. I have had three drive die on me the last dozen years or so. They all behaved in different ways before the "big crash" and one didn't give any warning at all. Backup and backup often. I have had at least 2 HDs in my computer the last 8 years and save all my work on both drives and now and then also to external media. That works for me.
Patrik