Question Windows 10 help

[spicelol]

Hello SO I had Windows 10 home edition and then I upgraded my pc and lost my license and I'm planning to buy windows 10 Pro OEM key will I be able to activate it or will I need to clean whole drive and use the free windows installer from their store

Sorry if you didn't understood. English is my not main language
Thanks

 

[spicelol]

Hello SO I had Windows 10 home edition and then I upgraded my pc and lost my license and I'm planning to buy windows 10 Pro OEM key will I be able to activate it or will I need to clean whole drive and use the free windows installer from their store

Sorry if you didn't understood. English is my not main language
Thanks