Hi guys,
in our environment we had the same problem, because our engineers get new PCs.
I was looking for best solution for us for OS Windows 7 64-bit Enterprise, test many options but the game with images & drivers was not good options. In the end we chose for this options:
1.) Create WindowsImageBackup to network drive or hard drive
2.) If you need any driver (in my case I need network driver), copy them to SATA hard drive. Important: NOT USB external drive, but 'classic' SATA drive.
2.) Open Tower Elitedesk 800 G2, plug in this SATA hard drive, where you have drivers. Again: DO NOT USE USB EXTERNAL HARD DRIVE!
3.) Turn PC on and Boot Windows from DVD
4.) Chose options "Repair your computer"
5.) Add drivers (in my case I need network driver because WindowsImageBackup was on network hard drive )
6.) Re-Image your System
7.) Sysprep
8.) Update drivers, ofcourse!
Thats all .
I think, this is the most fast way how to get Windows 7 to Elitedesk 800 G2.
Best regards