Replace Notebook Hard Drive What Does NTLDR Mean When Replacing A Toshiba Notebook Hard Drive?

What does NTLDR mean when replacing a toshiba notebook hard drive? - replace notebook hard drive

I bought a new hard drive for my Toshiba laptop, after formatting the hard drive, I get the message NTLDR is missing, please, Ctrl, Alt, Delete to restart. If I do I get the same message. Can someone help me to want, plus the Geek Squad guys, an arm and a leg for me?