Reinstall Windows 7 from Factory Restore

Hello, I was trying windows 8 developer preview for my all in one desktop dell inspiron one. It works great, but I would like to reinstall windows 7 64 bit (because it can run the programs I need for school) The problem is that the original did not come with a Win 7 OS installation disc.

It did come with a factory restore option. Usually I would press F8 at startup to access that option, but Windows 8 has a new menu and it doesn't say anything about Restoring to factory defaults. There must be a way because Windows 7 64 Bit is on the partitioned hard drive.

Please help as soon as possible.

Windows 8 does not support many dell inspiron drivers I need to run 3D software, so I need this factory restore.

Restoring Windows 7 from Windows 8 Developer Preview - Page 2 - Windows 7 Forums
Have you tried easybcd as SIW2 post?

With EasyBCD you can reinstall (downgrade) the boot manager and get the classsic boot screen.