NTDLR is missing when i cleaned out my hard drive?

my first computer had a whole bunch of viruses(like 500) so i connected the hard drive to my new computer and deleted everything on the hard drive from my first computer. Then i connected the cleaned hard drive back into my first computer. When i try to start it up i get the NTDLR is missing, because it has nowhere to boot from. What can i do to fix this? i thought that the system cd or recovery cd might help me but the only option i get is press ctr alt dlt to restart. is there any way i can install the os on the cleaned out hard drive using my new comp( will NTDLR also be installed:?)