Ubuntu Download-Wubi
Run the downloaded file
After the file is downloaded, you have to open it to run the installer. You will find the detailed instructions below. If you need further help, the various support options are listed at the bottom of this page.
If you are using Internet Explorer, you'll be asked wither to run or save the file. Choose Run to launch the installer.
Most other browsers, like Firefox, will only ask you to save the file. Click Save and then double-click the downloaded file to launch the installer.
Install Ubuntu
To install Ubuntu, all you need to do is choose your username and password. Please note that you have to insert your password twice to make sure you typed it correctly.
After choosing your password, click Install. The files will be downloaded and installed automatically.
Wait until Ubuntu is downloaded and installed. Please note that the whole process can take a while - downloaded file size is 700MB
When the installation is complete you will be prompted to restart your computer. Click Finish to restart.