Thanks, I'll give both a go. The issue is it happens randomly - I can use the computer for hours with no issue, and other times it will happen within mins of bootup.
- you may be on to something there. I have an SSD for my bootdrive and a normal HDD for all my files. I'll have a go at ShellExView when it happens again, but also start taking note if I was trying to access my SSD for HDD at the time.
Again, apologies to Alta, not trying to hijack your thread here mate - would love to hear if your symptoms are exactly the same and if these answers worked.