Installation of Windows 10

Sep 11, 2018
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Hallo,
I bought a Lenovo S10-3 pre installed with the Windows 7 starter. I later installed Android OS on the netbook and now I want windows back. Can I install Windows 10 directly? I don't have the product key.. I am hoping that the Windows 10 will pick it from the BIOS.
Netbook is now running on Android and I have Windows 10 on USB.
Please advice
 
Solution
while windows 10 has been optimized to run on even mobile devices the storage is too small for windows 10 in the longrun. its best to keep windows 7 on it or find a way to install chrome OS on it