“Recovery Point Browser” Verify inconsistent

If I run my “Recovery Point Browser” Verify function multiple times on the same Point, the results are inconsistent; sometimes they pass and sometimes they fail.

 

Only happens on one of my drives; I suspect it's happening because the drive is "Dirty".  Unfortunately I only discovered this after the drive being backed up (my system drive) died.  I moved the Dirty backup destination drive to another computer and found CHKDSK wants to run on it, but I've disabled that since I can't risk CHKDSK filesystem changes interferring with my ability to restore to my newly arrived RMA hard drive.  (The Dirty drive passed drive diagnostics perfectly.)

 

And I expect I'll be able to restore from the Dirty drive, since I've been doing so successfully from time to time.  Then I'll start backing up to a different drive, and then I'll reformat the Dirty drive.

 

The reason I started trying to Verify points in the first place, was to see if it would give me any insight into whether the drive that died, had issues before it's demise, and if so when.  I've got recovery points that cover several years.

 

I don't intend to do a fresh install, because I intend to move from XP to Win8 when it comes out in a few months.

 

I apologize that this all doesn't exactly ask a specific question; I guess I thought someone might surprise me by reassuring me that the Browser's Verify either isn't reliable, or can somehow help say when the drive being backed up started to fail.

 

I'm inclined at this point to just go back a few months, thinking that would provide plenty of time before the drive started to fail.

 

Sorry for the long post!