I bought my A300 with Windows Vista on board, afterwards I was provided with Windows 7 upgrade DVD.
Unfortunately I have lost the disc and as far as I know even if I use Toshiba recovery solution I will be back to Windows Vista. Is there any option to request the Wind 7 delivery or I have to buy the new one ?
As far as I know this was special offer from Toshiba when Win7 was launched. I think you cannot order it anymore.
What you can do now is to buy original Microsoft Win7 installation disc and install clean Win7 version on your A300. I have the same machine and Win7 runs perfectly on it. All necessary drivers, tools and utilities you can find on Toshiba support page.
You got this with your Vista. At the bottom of your notebook you will find Microsoft product key. This key belongs to original recovery image that you got with your notebook and it was Vista OS.
In your subject you write about Win7 upgrade. That’s the point. You have upgraded already preinstalled and activated Vista. So upgrade DVD has nothing to do with product key that you got with Vista OS.
You cannot download Microsoft OS or any kind of update. This is not downloadable.