In few days I'll get 2 VAIO notebooks with Windows 7 preinstalled. First - with Home Premium, second - with Professional. Is it possible to upgrade Home Premium on first notebook to Professional just using OEM serial number taken from notebook with Professional via Windows Anytime Upgrade without OS reinstall?
U can upgarde to Professional or Ultimate with OEM serial provided it should have slic 2.1 As u r mentioned, it's coming with Win7 preinstalled, so u'll hv slic 2.1.. So, yes u can upgrade.. u can get the OEM keys from sticky topic..
Hope it's possible, but according this page windows.microsoft.com/en-US/windows7/products/windows-anytime-upgrade Windows Anytime Upgrade is only available for online purchase in Australia, Belgium, Canada, Germany, France, Italy, Japan, the Netherlands, Spain, Sweden, Switzerland, the United Kingdom, and the United States. I think just keys purchasing was meant