Mac Address issue on Asrock P43twins1600

funfetus

Junior Member
Oct 20, 2008
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A couple days ago, I put together a new system with an Asrock P43twins1600 motherboard. From the first boot, at post, it showed the error:
"MAC address are invalid in both CMOS and Flash!
Press F1 to Resume"

Everything seems to be working except the onboard lan, which makes sense. I flashed the bios to the newest version (1.80) but no help. I also found the "mac tool" on the Asrock website, but it didn't work, then I realized it was for a different model mobo anyway. I've contacted tech support, but no reply yet. Maybe I'm being too impatient. Anyway, any help would be much appreciated.

Here are the system specs:
Asrock P43twins1600 motherboard
Intel Core 2 Duo 3.16ghz
4GB G.Skill DDR2-800
XFX GeForce 8600 GT