I've been having a bit of an install fest this weekend with Windows 7 Ultimate on my HP DV9292EU, Windows 7 Enterprise on my Work laptop and Android (!) on my trusty ASUS eeePC 701. All went fine except the HP laptop which had three unknown devices in device manager after the install.
One was labeled as a co-processor. I don't know what it was, but downloading the NVidia Nforce 430 drivers from here solved it:
Select Legacy, NForce 4 and then one of the 430 drivers. It downloaded this file which worked for me:
The two other device were labeled Base System Devices and proved to be some sort of Ricoh devices.
Downloading the Windows 7 drivers from the Lenovo site fixed these for me!
It now all looks good!