recovery CD ,it has no recovery Disk

asus lAPTOP N7JVTY12V
operating system .windows 7 os Win7 home premium 64-Bit-_EDITION
HDD 500GB
CPU i5 tECHNOLOGIE _dUAL cORE
430M
model number :asus N7premium
Prozesssor: intelcorei5
NvidiaGeFoorceQT325M;VRAM:1GB
Funktionen:IntelTurbo BOoost Technology
Why cann I do it?
Thanks
ortanse