Vista - Problem with Physical Address (MAC Address)

I'm having a problem with Physical Address (MAC Address). When i restart the computer, my Physical Address (MAC Address) changed. Do any one know why?

You know the MAC address changed because----? The MAC address is assigned
by the card manufacturer.


"MicroBoy" <MicroBoy.2tppv8@no-mx.forums.net> wrote in message
news:MicroBoy.2tppv8@no-mx.forums.net...
>
> *I'm having a problem with Physical Address (MAC Address). When i
> restart the computer, my Physical Address (MAC Address) changed. Do any
> one know why?*
>
>
> --
> MicroBoy

"MicroBoy" <MicroBoy.2tppv8@no-mx.forums.net> wrote in message
news:MicroBoy.2tppv8@no-mx.forums.net...
>
> *I'm having a problem with Physical Address (MAC Address). When i
> restart the computer, my Physical Address (MAC Address) changed. Do any
> one know why?*
>
>
> --
> MicroBoy

Do you really mean the Internet Protocol (IP) address of your computer
changed? If so that is normal for most people if your dialing into your ISP,
if your connected directly to a cable/DSL modem or your connected to a
router that has a built-in DHCP server function.

Here are explanations...

http://en.wikipedia.org/wiki/Mac_address

http://en.wikipedia.org/wiki/IP_address

http://en.wikipedia.org/wiki/DHCP

--

Al Jarvi (MS-MVP Windows Networking)

Please post *ALL* questions and replies to the news group for the
mutual benefit of all of us...
The MS-MVP Program - http://mvp.support.microsoft.com
This posting is provided "AS IS" with no warranties, and confers no
rights...
How to ask a question
http://support.microsoft.com/KB/555375

Before i installed windows vista i had windows xp and win xp didn't changed my mac address. The changing of mac address cause a problem for me because i have to change the mac address and then I can connect to internet. Is anyway to solve this problem?

Your MAC address is on your network adaptor.
Vista doesn't change it.
If you changed your network card, then it's changed.
You probably mean IP address.

Didn't you read Sooner Al's post? That can change, if you use DHCP and not
static (permanent).


"MicroBoy" <MicroBoy.2tqfke@no-mx.forums.net> wrote in message
news:MicroBoy.2tqfke@no-mx.forums.net...
>
> *Before i installed windows vista i had windows xp and win xp didn't
> changed my mac address. The changing of mac address cause a problem for
> me because i have to change the mac address and then I can connect to
> internet. Is anyway to solve this problem?*
>
>
> --
> MicroBoy

But why with Win XP the mac address doesn't change?

Exactly how are you checking this MAC address?





"MicroBoy" <MicroBoy.2tqhn0@no-mx.forums.net> wrote in message
news:MicroBoy.2tqhn0@no-mx.forums.net...
>
> *But why with Win XP the mac address doesn't change?*
>
>
> --
> MicroBoy

I'm checking by this:
1.Start
2.Run
3.Cmd
4.ipconfig/all

And I'm changing my mac address by this software: a-Mac Address Change

So, you're changing the MAC address with a program, and you don't know why
it's changing?

Why are you using this program????




"MicroBoy" <MicroBoy.2tqjqk@no-mx.forums.net> wrote in message
news:MicroBoy.2tqjqk@no-mx.forums.net...
>
> *I'm checking by this:
> 1.Start
> 2.Run
> 3.Cmd
> 4.ipconfig/all
>
> And I'm changing my mac address by this software: a-Mac Address Change*
>
>
> --
> MicroBoy

Because when I Turn On my PC, my mac address changed then with a program I return my mac address to the correct mac address.