After loging in on my dell Inspiron 710m my keyboard want type letter it type number instead. Please Help me

SOURCE: What Fn Key enables the keyboard to type letters instead of #s

use fn key plus numlk key

SOURCE: my dell laptop types numbers instead of letters on

Turn the NUMLOCK off Fn+ NumLk key

Testimonial: "thank you that worked"

SOURCE: Dell Inspiron 1440 keyboard keys issue

you need to isolate this issue first.
where are you typing? inside IE or in MSWord?
If both has issues then try typing in the DOS Command Window. If same issue try to boot in safe mode and check if you will still be getting same issue in safe mode. If all yes try to check the bios and update it by downloading the latest bios version from the support site from dell.