when i try to boot up my computer i get the"ntldr is missing" with a black screen, so i looked up solutions on google and i went to this website like "ntldrismissing.com" and i downloaded the iso and burned it to a cd and i did what is says but still get the error.
so i tried to format my hard drive and it says there is no hard disk drive installed
hellp...

have a look here

http://www.computerhope.com/issues/ch000465.htm

is the BIOS set correctly?