Package Fancyhdr Warning: \headheight is too small (12.0pt):

Package Fancyhdr Warning: \headheight is too small (12.0pt):
Make it at least 14.49998pt.
We now make it that large for the rest of the document.

Change headheight

\setlength{\headheight}{15pt}

Check BIOS in Win 7

Use msinfo32.exe to display bios information
HWInfo