[SOLVED] Upgrading from 32bit to 64 bit

Nov 17, 2019
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I just finished my first PC build and windows 7 is installed along with a liscense. But it's 32 bit, I was wondering if I can upgrade to 64 bit and if you have to pay for another liscense while doing so.

I3 2120
Hd4850
6gb ram 1333
750 hdd
Dell optiplex 390 mobo