what if lost genuine windows 8.1 SL

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mansoor1997
mansoor1997 Member Posts: 1 New User

i bought acer aspire E1-572 with genuine windows 8.1 SL. i upgareded my OS to windows 10, but accidently i installed it clean, and i lost my genuine windows 8.1 SL. Any way to get back the genuine windows?

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