Can I re-use my Windows 10 licence for an OS reload on same PC


New Member
Hello, I'd like to do a Windows 10 reinstall ( a complete OS reinstall) on my current PC, as it's old and getting very slow. Would anyone know can I reuse my Windows key, which I originally bought on Ebay the first time I installed it about 4 years ago? According to my system page it's a Windows 10 Pro N version, running on a 32 bit machine? My PC is quite an old Dell and originally came with Vista but still chugs along, albeit slowly these days and I'm only a light user. My newer PC has just died and I'm trying to save a bit of cash in these difficult times.

Many thanks if you can help,
Paul Q