Unknown device on T420i in win7

Hello! I just installed win 7 pro on my cto T420 4177. Deevice Manager shows that there is an unknown device. I tried almost all pilots on lenovo.com, but without success. Is the hardware ID

ACP\LEN0068

* LEN0068

Could someone tell me what is it? How to fix?

Thank you!

Rui

Fixed, but I'll still leave my post here in case where someone in need.

It is power management driver.

For "sm bus controller", go to the website of intel, support, check the updates of the system, install the software that advises.

Tags: ThinkPad Notebooks

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