Hello. Recently i buy new laptop lenovo y70 with win 8.1 os. I want to upgrade to win 10 but cant find the notification to upgrade it like my friends laptop. Contact lenovo service centre and they say the notification to upgrade is limited and already finish. Is it true? Iinm the free upgrade available until next year. If i install win 10 using boot pendrive without the free upgrade notification, will it void my current license with win 8.1.

Thank you for any information..

Already done yesterday. Update all n check for new update every hours still dont get the notification.

Which version of win 10 should i download?