As Windows 7 can be installed only from a DVD, it might pose a problem for older PCs that doesn't have a DVD drive (yes, there are some people who still has a CD drive installed on their PC). So, the best way to tackle this problem would be installed it from a USB drive. Easier said than done for it can be quite tricky and complicated trying to make a bootable USB and then loading the Windows 7 installer files into it.

But worry not, because there are couple of tools to easily make a USB drive bootable. The one we like is the Novicorp WinToFlash utility (in the DVD). With this tool you can easily incorporate all the installer files and at the same time makes it bootable in just a few steps and with just a matter of a few mouse clicks.

The only drawback here is that you will need to use a PC with a DVD drive to copy Windows 7 files from the installer DVD.