Stop: 0*0000007B(0*F78DA524, 0*C0000034, 0*00

When computer is starting i got this error!
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Booting 'Windows Vista'
acpi
Vista Loader 2.1.2

ACPI: Reclaim Memory Not found!!
Done!
fallback 1
find --set-root /bootmgr

Error:17: File not found
Booting 'Windows NT/2000/XP'
Fallback 2

find --set-root- /ntldr

Error 17: File not found
Booitng 'Enter Command Linke'

Boot Failed! Press any key to enter command line.

When i have pressed enter key this below content show on black screen.

GRUB4DOS 0.4.3 200703-13, Memory:636k/2009M, CodeEnd: 0x3D7BC

[Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions,. ANy where else TAB lists the possible completions of a device/filename. ESC at any time exit.]

grub>
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At that time what can i do solve my problem. Plz any one have faced this type of problem then plz suggest me what can i do further.

Your Help Will Be appreciate!!

Thank You.