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johnc View Drop Down
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    Posted: 22 May 2016 at 4:37am
I'm getting this error when booting "Intel Lan Mac addresses are invalid on both CMOS and Flash"

I've tried using the mac tool here: Intel Lan Mac addresses are invalid on both CMOS and Flash

but it's not compatible with windows 10. Any help?

My motherboard is the H170M Pro4
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parsec View Drop Down
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Points: 4996 		Post Options Post Options   Thanks (0) Thanks(0)   Quote parsec Quote  Post ReplyReply Direct Link To This Post Posted: 22 May 2016 at 12:03pm
Originally posted by johnc johnc wrote:

I'm getting this error when booting "Intel Lan Mac addresses are invalid on both CMOS and Flash"

I've tried using the mac tool here: Intel Lan Mac addresses are invalid on both CMOS and Flash

but it's not compatible with windows 10. Any help?

My motherboard is the H170M Pro4

No link to a MAC address tool in your post. Looks like your copy and paste buffer was not updated.

Have you tried clearing the UEFI/BIOS? You may need to remove the board's battery to clear the UEFI/BIOS memory.

In Windows, did you open Network and Sharing Center, and run a Diagnosis on that network connection?
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johnc View Drop Down
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Sorry, here's the link to the tool: http://www.asrock.com/support/Download/MacTool.asp

Yes, I tried clearing the BIOS via jumper & battery removal.
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darthsian View Drop Down
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Originally posted by johnc johnc wrote:

I'm getting this error when booting "Intel Lan Mac addresses are invalid on both CMOS and Flash"

I've tried using the mac tool here: Intel Lan Mac addresses are invalid on both CMOS and Flash

but it's not compatible with windows 10. Any help?

My motherboard is the H170M Pro4

I have the same problem Unhappy

My motherboard is the Z170 Extreme4.
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Points: 4996 		Post Options Post Options   Thanks (0) Thanks(0)   Quote parsec Quote  Post ReplyReply Direct Link To This Post Posted: 27 May 2016 at 12:34pm
Originally posted by darthsian darthsian wrote:

Originally posted by johnc johnc wrote:

I'm getting this error when booting "Intel Lan Mac addresses are invalid on both CMOS and Flash"

I've tried using the mac tool here: Intel Lan Mac addresses are invalid on both CMOS and Flash

but it's not compatible with windows 10. Any help?

My motherboard is the H170M Pro4

I have the same problem Unhappy

My motherboard is the Z170 Extreme4.


To anyone with this situation:

Does your PC boot after you see this message?

Does your networking work? Do you have Internet access?

What kind of Internet service do you have? Are you connected directly to a router?

Did you run the Troubleshooting feature available from Windows Network and Sharing Center?

Did you install the Chipset/INF files, the INF driver ver:10.1.1.12 from your board's download page?

Did you install the Intel Management Engine Software, the Intel Management Engine driver, the version specific to your OS?
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darthsian View Drop Down
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Joined: 27 May 2016
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To anyone with this situation:

Does your PC boot after you see this message?
Yes

Does your networking work? Do you have Internet access?
Yes

What kind of Internet service do you have? Are you connected directly to a router?
DSL, Directly to a router

Did you run the Troubleshooting feature available from Windows Network and Sharing Center?
Yes, no errors was founded

Did you install the Chipset/INF files, the INF driver ver:10.1.1.12 from your board's download page?
Yes

Did you install the Intel Management Engine Software, the Intel Management Engine driver, the version specific to your OS?
Yes

It has nothing to do with OS and software drivers. Its BIOS/UEFI problem... i will try create DOS bootable drive and run MAC Address Writer today. Ill post my results here later.



Edited by darthsian - 27 May 2016 at 1:57pm
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johnc View Drop Down
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Points: 6 		Post Options Post Options   Thanks (0) Thanks(0)   Quote johnc Quote  Post ReplyReply Direct Link To This Post Posted: 28 May 2016 at 8:06pm
At startup you get the error message and it tells you to hit F1 to continue or F2 for BIOS. When you hit F1 everything boots and runs normally. It doesn't seem to affect anything, it's just annoying. The answer to all the other questions is yes.

I really think we just need a MAC Address Tool that's compatible with Windows 10.
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Xaltar View Drop Down
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Points: 24578 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 28 May 2016 at 8:13pm
I found this helpful, thetoons discovered it and shared it in his thread.


It explains everything you need to know to use the dos based mac writer tool to correct this issue. It seems to occur when people use the backup BIOS and flash it back to the main BIOS. It would seem that the mac address entered in the BIOS B does not match the board in some cases. Likely this is because it is impossible to flash BIOS B so during the assembly process it remains without it's board specific information (mac address in this case).
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johnc View Drop Down
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Points: 6 		Post Options Post Options   Thanks (0) Thanks(0)   Quote johnc Quote  Post ReplyReply Direct Link To This Post Posted: 28 May 2016 at 11:21pm
That worked like a charm! Thanks for the help.
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