Booting 'Windows Vista' error, Please Help

Hi
I am getting this kind of error when i switch on my VAIO

Booting 'Windows Vista'
acpi
Vista Loader 2.1.2
Done!
fallback 1
find --set-root /bootmgr

{this hangs for approximately 3 minutes then the following attempt occurs:}

Error 17: File not found
Booting 'Windows NT/2000/XP'

fallback 2
find --set-root /ntldr

{this hangs for approximately 2 minutes then the following occurs:}

Error 17: File not found
Booting 'Enter Command Line'

Boot failed! Press any key to enter command line.


and nothing i can do from here
Neither my recovery disks nor recovery partition is working here

Please Help me....