I updated my lenovo ideacentre b540p from windows 7 home premium to windows 8.1 pro. I have two issues that came up after the upgrade.

1. I can no longer access the Lenovo rescue system 3.0 by pressing the F2 button during startup to boot into recovery mode which was possible when I was using windows 7 and because of this I am unable to install the software and drivers that came with the PC.

2. In device manager the multimedia controller driver is not installed. It shows a yellow sign in the other devices group. I have tried different version from the lenovo support site but none of them work. The PC was shipped without a CD containing the drivers but if I can access the rescue system, I believe I will find the driver I need for the multimedia controller.