I have removed the hard disk, bought a powered caddy, plugged into my 2nd laptop.

Can save my own data, and hope as now an external hard drive I can delete Windows system.

But how to re-install Windows from a disc? Cannot be done in situ as drivers not loaded sufficiently to recognise my DVD internal drive.

Can this be done as an external drive plugged into another laptop?

Old lady, nearly 80 yrs old. Vanwin