This is a start.
At first I wanted to be under the Win7, because I was originally 7 and win8.1 dual system, want to direct Win7 cover. But I don't know what's going on, it's more complicated. So I put it under the win8.1.
First, the Win7 system disk was formatted.
Put the ISO file and the Wubi.exe in the e-packing directory.
Run Wubi.exe
An interface appears, select the installed disk, and set the password.
Choose to ensure networking after installation, I want to start off the network to try, but always error.
Next, follow the prompts, step by step on the line. In fact, it's very simple, restart, and then just fine. Enter the password. Now I'm in Firefox.
Ubuntu has a nice interface, I set up high contrast, and I changed my desktop.
Sheldon's favorite system, after all, is looking forward to a good experience.
Just put ubuntu12.04 under the win8.1.