The HDD is around 3 years old I think. Not sure how old would count as old in this case?
It is partitioned, one half has 70Gb capacity and 20.3 free, the other 41.7Gb capacity and 10.3 free.
As far as I can tell defrag utility isn't set to run whiilst the sytem is idle and never has been.
Indexing service is on, but this has never caused this problem before. I'm not exactly sure what this service does and when I tried to turn it off I got "access denied" messages regarding some files in the drive. I'm assuming this isn't normal? Should I be worried?
As for my protection apps, I use avast antivirus and it isn't set to run any regular scheduled scans, I just mannually run it myself.
Any other thoughts would be welcome!