The solution from en.community.dell.com/.../20215946.aspx works for me.
Hi Everyone, I'm trying to download Windows 8 x64 drivers for my N5110 but it returns " Sorry, the requested file could not be downloaded. " message. The only driver that I can download is the Alps driver. I have successfully upgraded my N5110 from Windows 7 (by updating the BIOS first to A11) and now I want to install anything dell published for N5110 Windows 8. Any clue about the "Sorry, the requested file could not be downloaded. " message? Thanks, Ferry M.
N5110 Windows 8 drivers download " Sorry, the requested file could not be 
downloaded. "