查看win10系统产品密钥
1.win+R 输入Regedit运行注册表
2.找到（在HKEY_LOCAL_MACHINE–》SOFTWARE–》Microsoft–》Windows NT–》CurrentVersion–》SoftwareProtectionPlatform里面的BackupProductKeyDefault
(计算机\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform)