Windows 7 Home Premium 64 Bit Download
The error message is because Microsoft will not support, or supply ISO files, for OEM-licensed systems like yours. The best solution is to go back to the shop that serviced your computer and tell them to reinstall the proper licensed copy of Windows 7. If they refuse, you can download a ISO file for Windows 7 Home Premium by using the tool described below. You can create an installation DVD from the ISO file by using ImgBurn (http://www.imgburn.com/) or an installation USB flash drive (if your VAIO can boot from USB) by using Rufus (https://rufus.ie/).
ImgBurn and Rufus are both free. Once installed, use the product key from the COA sticker on your VAIO to activate Windows. You can obtain a legitimate Windows 7 ISO file by using the download tool here:https://www.heidoc.net/joomla/technology-science/microsoft/67-microsoft-windows-and-office-iso-download-tool.
If you are willing to use an ISO file from August 2018 (5.5 GB), you can download that immediately. However, if you want the original version, downloads are quite limited. Notes below from the Heidoc support forum. "The download database on the server will be reset on the first day of every month. We will then generate one link per hour on a first come first served basis, whatever is requested, until all licenses are used up. The database is then again reset on the first day of the following month, and downloads can be provided again for some time."