removing the cmos passwd in nt,2k or XP

sir,
I know in win 98 we can use debug to remove cmos password but in 2k i tried debug but i didn't worked even in safe mode & safe mode with command prompt please help me . This is to know things in win 2k & i don't want any 3rd party tool to do that

Bios password problem

This actually has nothing at all to do with your OS...

No CMOS dosnt have anything to do with OS, BUT if Sis Soft Sandra and Norton can access CMOS why cant OS change CMOS.
I read that u can change BIOS while computers in so theres no reason why OS cant access password such as VIRUS do.

Yes, there may be some 3rd party software designed to indeed change your CMOS password, I imagine it's possible through your OS, but I've never heard of such a thing.

I know what you're talking about w/ Norton and SiSoft, I think it's just their own little device detecter system.

Can't you just swap the clear CMOS jumper ?

Surely this would clear the password?

Yessir... this more belongs in hardware then windows OS.


Anyways, if you have an ABIT board, if you boot while holding the INSERT key down it will clear the CMOS (or at least reset everything), but I'm not sure if that clears the password. However, on all motherboards, there is a jumper that will clear it on boot. Look in your motherboard manual for the jumper and the positioning. Don't forget to put the jumper back where it was (typically just don't short it, have it hanging off of one ping) when you are finished.

You can write to CMOS memory with direct hardware access (real mode, Win98). Win2k and XP have 100% virtual hardware access and they just won't let you do it. If you have to make it by software, make a DOS boot floppy.

I suppose you could write a driver that lets you access the CMOS
(assuming you are really good at low level systems programming. )

which one?

setting CMOS password via OS? are you sure there is software which can do this? I only know 2 ways :
1. swap the CMOS jumper
2. Remove CMOS battery
I think doing these way is better than using OS, coz.. you know that OS sometimes have a bug