Missing operation system Windows 7

[Nooob123321]

Hello,
I have a problem With my pc. I Was about to retore and then i canceled it. And when i reboot i says: "Missing operation system" i have no Windows cd. Heeeeelp me!!!!
i have a Asus i5 Intel core Windows 7. Not HP i have Asus

 

[Ubrales]

Welcome to Tom's Hardware Forums!

Any Windows 7 DVD will work. All you need is the authorization code that is unique to your computer. This will usually be on a sticker attached to the underside of the computer.

If you do not have this code, you are out of luck!

 

[Nooob123321]

Thanks