[SOLVED] windows 10 installation questions

Jan 9, 2019
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Hi all, I recently purchased a Dell Optiplex 790 PC , it has windows 10 64bit and the key is on a sticker on top of of the PC, it's replacing my HP compaq 7700, my HP has a 250GB SSD with windows 7 pro 32 bit .. I want to use the SSD in my Dell, so I need to reinstall windows 10, can I do this for free since the new pc has windows 10 & the key?? if so,how would I do this when the PC won't surf the net after installing the SSD ??