I'm having a really big problem with installing Ubuntu on my computer. It seems that when I try to install from BIOS from the CD, nothing happens, and when I say nothing happens it boots up my computer like usual. When I try to install from the CD from My Computer directly from the wubi.exe file, nothing happens. THEN when I try to install from the boot helper, it gives me this error:

An error occurred: 
Could not retrieve the required installation files
For more information please see the log file: c:\users\Meghan\appdata\local\temp\wubi-14.04-rev286.log

Will it help if I say I have a pirated version of Windows? Maybe that's why?

I'm frustrated, and I'm not sure what to do. Please help me