Need recovery help

I'm using an Asus A53E series laptop that I want to restore to its original condition. I don't have a Windows installation disc, so to do this, I have to access the recovery option during boot up. I've read that this is normally done by pressing F9 but that brings me to Windows Boot Manager which only gives me the options to boot Windows 7 or use the Windows Memory Diagnostic tool. I've tried using F8 but I only get options such as Repair Computer, Safe Modes, Debug, Etc, as well as F10 which just lets me edit my boot options. I can't delete the Windows partition in the BIOS and obviously not in disk management either. I've tried using DISKPART to make the Windows partition inactive and the Recovery partition active but the Windows remains primary. Any advice on how to access the Recovery partition or delete the Windows partition will be appreciated.