PRODUCT IS ALREADY IN USE - Microsoft Community

i'm going try , make short , simple. son , decided build our first gaming pc! got put , ran problems updating motherboard bios , our pc randomly freeze after installing windows 10, decided wipe pc clean , start over. seeing how installed windows 10 , anti virus program seen no reason save anything. guess that's wrong. every time enter product key tells me invalid , i'm getting error code 0xc004c008. there away me enter product key , work? have a receipt , packaging micro center.

try telephone activation

open run command (win+r)

· type "slui 4"

· have select country or region

· dialog box appear , can see telephone number , installation id.

· call number , provide installation id offline activation

· provide confirmation id

· can activate product after enterig confirmation id.

Windows / Windows 10 / Install, upgrade, & activate / PC