I can not get to the WinXP screen

I switched from High speed internet to DSL and that night I shut the computer down. I turned it back on in the morning and it offered to open in safe mode. I tried to open it normally but it did not work. I tried using my restore cds but that was not working either. Now I am getting a NTLDR is missing. I can go to Recovery mode by pushing F10. I have no recovery disk. Will any XP recovery disk work? Do I need a special one for my model of HP? It is a HP pavilion a206X. How can I get my computer back? Thank you, Mary Ann