- Open cmd
- Type in 'bcdedit /set {default] bootmenupolicy standard'
- Insert the Windows 8 cd and boot into advanced options
- Open cmd and identify which drive letter partition your Win 8 OS lives (I could tell easily due to certain applications installed in Prog Files)
- Type in the following command 'bcdboot E:\windows" ('E was where my Win 8 OS was, D was my Win 7)
- Reboot and your done!
Done! If you want the old school, replace the word 'standard' with 'legacy' and if your system does not change the boot loader, redo the Windows 8 boot cd process and use the Win 7 drive letter.