CTRL+ALT+DEL Isn’t Working in 2000 OS

CTRL+ALT+DEL is not working in Windows 2000 OS after initial login, it does work at login screen but after that to try and get to task manager it doesn’t work. I have installed SP4 too this PC but I have also installed it on a number of other PC and I haven?t every had a problem that I know of. Does anybody have information on why the (CTRL+ALT+DEl) Function would stop working after initial login in Windows2000 OS? Please Help. Thank You so Much for any Help and God Bless!

Sincerely,

Daniel E. Gomez II
dgomez@calvaryslc.org