Hello - This is the word from Microsoft (as of 2 months ago) RE : Digital River-
Note that it was written by an Indian Microsoft helper, if any writing is a bit ?? off.......
For disclosure I have Copied and Pasted the reply to your basic question - - - - - - - - - -
These are retail installation media you can download and use to reinstall your copy of Windows 7 that came with your PC. The file is in the .ISO format which is a digital replica of a disc, you have prepare it after downloading it:
Download the corresponding edition of Windows 7 you have a license for from the following link. You can identify the edition on COA sticker attached to your machine, with at bottom or battery compartment (laptop) or top/side if its a desktop computer.
COA Certificate of Authenticity:
What is the Windows Certificate of Authenticity?
• Windows 7 Home Premium (x86) - 32 bit
• Windows 7 Home Premium (x64) - 64 bit
• Windows 7 Professional (x86) - 32 bit
• Windows 7 Professional (x64) - 64 bit
• Windows 7 Ultimate (x86)* - 32 bit
• Windows 7 Ultimate (x64)* - 64 bit
32 vs 64 bit
Is my PC running the 32-bit or 64-bit version of Windows?
ImgBurn - In addtion to supporting the creation of CD's from .ISO files,
it supports a wide range of other image file formats, and it's free.
(BIN, CUE, DI, DVD, GI, IMG, MDS, NRG, PDI and ISO)
Note: Always use the slowest burn speed (4x or 2x) if offered a choice.