Hi,
You can try making your own plain W7 64 bit Home Premium installation media as follows...
Click on the Windows ISO Downloader.exe link to download the tool to create the W7 ISO file download.
I have zipped up and attached the Microsoft utility below, that will allow you to either put the file on a USB flash drive or burn it to a DVD.
Then you can install the drivers and available software you need from your PC's support page.