Hopefully most folks dont have this level of trouble with their optimus drivers but this worked for me and is worth a shot if anyone is struggling with the intel driver update. Step 6 - reload the nvidia drivers (I use the verde drivers from the nividia web site) Step 4 - after the reboot, the latest intel driver loads fine Step 3 - the OS boots with no video device found - using windows update it got me a 'vanilla' intel hd driver and installed fine Step 2 is to disable optimus in the bios - boot to only the intel graphics adapter Step 1 is to uninstall the currently installed Intel and nvidia graphic drivers The good news is that I have been able to install the Intel Driver package. I finally got a helpful tip from the Intel WIDI engineer that corrected a misperception of mine - Intel drivers should be upgradable on an Optimus system - there is nothing special about that driver (contrary to what the nvidia and lenovo sites were telling me). The problem I had was that both the Lenovo packaged video driver and also the Intel packaged driver both complained and would not install on my new laptop. The initial post on Intel's communities website suggested I needed to update my video driver. I then used driver swerper to get rid of all the many nvidia entries into the registry and all was well. The first issue I had was that playback of a video on the widi monitor hung after 5-15 minutes of playback. I had the same problem with the nvidia driver mucking up the Radeon HD drivers and making things flaky for 'Graphics By AMD Radeon HD'.
NVIDIA cards: Click on Adjust Image Settings with Preview, then select my preference emphasizing performance. Choosing the control panel for your dedicated GPU (usually NVIDIA, ATI, AMD Radeon) will display this time. The background: I have a Lenovo T420s with Optimus and since it supports Widi 2.0 I had wanted to get that working. How Do I Switch From Intel Graphics To NVIDIA After closing the Intel Graphics Control Panel, click right again on the desktop. I wanted share my learnings from a recent, fairly frustrating support experience.
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