After many attempts with the HP laptop's Recovery Manager (which only allows one sequence/run), I managed to complete a 5-DVD set of recovery disks. However, Nº1 (of 5, being a DVD-R) DVD is partially unreadable, hence corrupt.
The others (4-5 of 5) were burnt on DVD+5, which proved much more reliable first-time.
How do I re-instigate a re-run of Recovery Manager? Does HP have to give me authority to do this... for some reason?
OS = Windows 8.1, incidentally.