03-19-2014 09:13 AM
I have a t430u model 3351 that is 13 months old. I updated all the drivers through the Lenovo system update, the last thing to update was the BIOS. The BIOS successfully updated to version 2.08 and everthing was fine. Then I had to reboot the computer due to some windows updates, upon turning back on I get the 1802 Unauthorized network card is plugged in.
I never replaced the network card, it is the original card so I think the BIOS update is causing the problem. I pulled the network card and the FRU P/N on the card is 04W3763. With the card out it boots up again but I can't believe the card is the issue since it's the original part in a 13 month old machine.
Not sure what to do, I'm hoping there is a way to roll back the BIOS maybe.
Any suggestions appreciated.
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03-19-2014 09:23 AM - edited 03-19-2014 09:37 AM
Good afternoon and welcome to the community.
A question... Did you purchase the machine new, direct from Lenovo, or used from a 3rd party?
Edit to follow-up: Looking at the FRU BOM for the T430U:
you'll see the section for wireless adapters. There are three for WLAN, one Intel, and as best I can determine, two RealTek. Your FRU, which again as best I can tell, is a Broadcom, isn't on the list. That would be a reason for your 1802 error hitting the BIOS whitelist.
So, if you got the machine from a 3rd party, what likely happened is that they swapped in the non-whitelisted card and applied a modified BIOS to make it all work. Once you updated with the official BIOS, you essentially reapplied the whitelist and the boot fails with 1802.
03-19-2014 09:48 AM
Well, that's a stumper.
I've not heard of a situation where applying a BIOS update to an "authorized" factory configuration has resulted in the original factory-supplied wireless card hitting the 1802 wall. If you're still under warranty, I'd consider contacting Service about this.
If you want to explore back-leveling the BIOS, you can find links to two prior versions near the bottom of the following page: http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS031725
03-19-2014 09:52 AM
03-19-2014 10:39 AM
03-19-2014 10:41 AM
03-19-2014 10:42 AM
Updating BIOS via Windows application always had issues. It is better to use bootable CD image edition.
On the other hand there is a risk with every BIOS update that it might fail and your motherboard is dead. Have you tried to load default BIOS values ?
03-19-2014 11:32 AM