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Windows 7: How can I delete/reset MAC of network adapter?

25 May 2015   #1
Bird333

Win 7 x64
 
 
How can I delete/reset MAC of network adapter?

I am running win7 x64 ultimate. I set a MAC address in the bios and somehow Windows has saved it somewhere. I have deleted the device in device manager and when it was redetected it was still there. I have reset the bios to defaults but when I run 'ipconfig /all' the MAC is still there. How can I get rid of it?


My System SpecsSystem Spec
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26 May 2015   #2
jumanji

Windows 7 Home Premium 32 bit
 
 

Your problem is not addressed clearly.Atleast to me it is not clear.

First, it is for the first time I am hearing the Mac address being set in the BIOS. Can you explain how was it set in the BIOS?

Second, what exactly is the device? Name/manufacturer/Model

Third, why do you want to change/reset the Mac Address? ( Yep, it may be possible to reset the Mac Address and I had discussed this matter with NoelDP long back on a different context but I would like to know why you want to change/reset it. What exactly is your problem that necessitates such a change?)
My System SpecsSystem Spec
26 May 2015   #3
Bird333

Win 7 x64
 
 

This is a DFI Nforce 4 mobo. It has two adapters. One is part of the nforce chipset (Nvidia) and one is a Marvell. I couldn't get the Marvell one to work. In trying to get it to work, I saw a place in the BIOS to manually set a MAC address but it turns out it was for the Nvidia adapter not the Marvell. Now windows has this MAC stored and I want it to go back to how it was originally. Does that clear it up.
My System SpecsSystem Spec
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26 May 2015   #4
GokAy

Windows 7 Ultimate x64 SP1
 
 

Tried clearing CMOS?
My System SpecsSystem Spec
26 May 2015   #5
Bird333

Win 7 x64
 
 

Yes.
My System SpecsSystem Spec
26 May 2015   #6
jumanji

Windows 7 Home Premium 32 bit
 
 

I just had a cursory glance at your motherboard manual.

In the BIOS you should have enabled Machine Mac (NV) Address Input to be able to enter the MAC(NV) Address Input. Simply by disabling it and saving the setting should take away the address you entered. That is what my common sense tells me . What is that address you entered? Some Random Number?

In the same page enable the Marvel LAN. Again do not forget to save the settings.

Provided you had installed the drivers correctly for both the LAN and the LAN hardware is functional, Windows will always get the hard encoded Mac numbers for both the LAN.

To check open command prompt ( Start > All Programs > Accessories > Command prompt ) and type getmac /v and press enter.

You should see the MAC address of both your LAN.

If you still have problems, its beyond me . Let other experts deal with it.( I would return the board and get a new one.)
My System SpecsSystem Spec
26 May 2015   #7
Bird333

Win 7 x64
 
 

I've done all that with the BIOS. It seems to me that Windows has the MAC stored in the registry somewhere or are you saying that is not possible?
My System SpecsSystem Spec
26 May 2015   #8
jumanji

Windows 7 Home Premium 32 bit
 
 

What is the result of getmac /v? Can you post a screenshot of it?

Let the networking experts see it. What is the address you entered? Wherefrom did you get it?
My System SpecsSystem Spec
26 May 2015   #9
Ztruker

Windows 10 Pro X64
 
 

Try searching the registry for the MAC address.
My System SpecsSystem Spec
27 May 2015   #10
logicearth

Windows 10 Pro (x64)
 
 

The MAC address was probably set in the hardware itself. Not in Windows.
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 How can I delete/reset MAC of network adapter?




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