operating system not found and no drivers were found eror

[NIMA ZANDI]

as usual I turned off my laptop and after a while a turned on again to use my laptop but it couldn't reach operating system and showed error :
" OPERATING SYSTEM NOT FOUND" !

I tried all instructions to solve the problem and finally run by windows start up CD to
re-install new windows. this time I faced error:
" No drivers were found. click load driver to provide a mass storage driver for installation"

I confused. I really don't what should I do anymore

 

[gregrocker]

Work through these steps for Troubleshooting Windows 7 Failure to Boot

Report back what happens as you go as there may be more steps.

Where did you get Win7 installer? Did you burn it yourself?

Do you have an EFI BIOS? Enter BIOS setup to see if HD is detected, and if there is an EFI Boot disk in BIOS Boot order listings.