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Special Forums Windows & DOS: Issues & Discussions Windows 7: nic lost mac address Post 302645603 by neutronscott on Thursday 24th of May 2012 12:01:45 PM
Old 05-24-2012
Windows 7: nic lost mac address

Anyone ever see the NIC get a mac of 00-00-00-00-00-00?
Changing it in driver advanced tab didn't stick. Used macshift and gave it a random one. Best guess I had is it lost its eprom. It was an issues on my dads pc I stopped by after work so I wasn't able to boot a proper OS to further diagnose.

Just thought I'd see if anyone here has seen it and pinpointed it to a specific cause (specific rootkit/virus, chipset fault, ...)

---------- Post updated 05-24-12 at 12:01 PM ---------- Previous update was 05-23-12 at 07:38 PM ----------

Apparently onboard NICs do this due to power issues and dumping their CMOS or BIOS FLASH areas. I guess manufacturers save a few cents putting it in an already existant reprogrammable chip than a small eprom.
So the problem was hardware, but fixable with utilites to reprogram the MAC.
This User Gave Thanks to neutronscott For This Post:
 

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MY(4)                                                      BSD Kernel Interfaces Manual                                                      MY(4)

NAME
my -- Myson Technology Ethernet PCI driver SYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file: device my Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): if_my_load="YES" DESCRIPTION
The my driver provides support for various NICs based on the Myson chipset. The Myson chipset is a variant of the DEC Tulip NIC chipset. The driver will work with almost any MII-compliant PHY, thus failure to positively identify the chip is not a fatal error. HARDWARE
The my driver provides support for various NICs based on the Myson chipset. Supported models include: o Myson MTD800 PCI Fast Ethernet chip o Myson MTD803 PCI Fast Ethernet chip o Myson MTD89X PCI Gigabit Ethernet chip SEE ALSO
altq(4), de(4), netintro(4), pci(4), ifconfig(8) HISTORY
The my driver first appeared in FreeBSD 4.6. AUTHORS
The my driver was written by Myson Technology Inc. This manual page was written by Hiten M. Pandya <hmp@FreeBSD.org>. BUGS
The my driver does not support Power Management Events (PME). BSD March 11, 2007 BSD
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