Error Starting Program

Happy Holiday's!

I need help with my computer. When I power up, and message
of: "The PSAPI.DLL file is linked to missing export
NTDLL.DLL:NTNtCreateProfile." box comes up.

Now I can't burn CD's, or play CD's.

Does anyone know how I can get that missing link re-
installed? I already used my microsoft windows98 disc. I
still got the same message error. I also tried to download
off of the microsoft site a ntdll.dll, however I was not
able to open the download.

Can anyone help? B