Hi, I having one problem regarding i am using putty from winxp pc to connect to my linux server, than i found a problem is i can press the keypad number like 1,2,3,4... on normal, but when i am using command vim to edit the file than all the keypad number key when i press than not come out 1,2,3,4 correct key, just come out A,B,D,F... why? I have try to change the setting on keyboard from putty, but still same. How to solve this problem? thank you very much.

Is NumLock on?

Also:
3.3.5 Controlling Application Keypad mode
Application Keypad mode is a way for the server to change the behaviour of the numeric keypad.

In normal mode, the keypad behaves like a normal Windows keypad: with NumLock on, the number keys generate numbers, and with NumLock off they act like the arrow keys and Home, End etc.

In application mode, all the keypad keys send special control sequences, including Num Lock. Num Lock stops behaving like Num Lock and becomes another function key.

Depending on which version of Windows you run, you may find the Num Lock light still flashes on and off every time you press Num Lock, even when application mode is active and Num Lock is acting like a function key. This is unavoidable.

Application keypad mode can be turned on and off by the server, depending on the application. PuTTY allows you to configure the initial state, and also allows you to disable application mode completely.

Are you using Application Keypad mode?

I'm not the OP but I would like to know how to tell if you are in Application Mode?

PuTTY allows you to configure the initial state, and also allows you to disable application mode completely.

^ from the PuTTY website.

To check your Application keypad mode, open PuTTY, expand 'Terminal', left-click 'Keyboard'. There is a whole box titled 'Application keypad settings'.

Thank you! Don't know about the OP, but that resolved the issue for me.