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Question

My L412 came with Windows 7 Home Premium. I've reinstalled Windows using a purchased Windows 7 ultimate DVD and I've installed most of the software but I still have 3 base system devices with yellow exclamation marks on them. 

 

device manager 3 bangs.jpg

 

Any ideas on how to fix?

Answer

The Lenovo Windows preload contains all required drivers.  When a clean, shrink wrap version of Windows is installed, many of the drivers, and the optimizations of the preload are lost.

 

In this particular case, the missing drivers are most likely for the card reader.  Try downloading and installing the following file from the Lenovo support site.

 

http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-75277

 

Additionally, other drivers could be missing.  We recommend installing ThinkVantage system update vsersion 4.0 and run that to find & install applicable Lenovo updates.   http://support.lenovo.com/en_US/detail.page?LegacyDocID=TVSU-UPDATE

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