Right click device under 'Monitors' and then click 'Update driver software'Ĭlick 'Browse my computer for driver software.'Ĭlick 'Let me pick from a list of device drivers on my computer.' Hold Win and press R - type devmgmt.msc and press Enter. I've no doubt you know how but just for newbie readers: The monitor needs to be reverted back to the 'Generic PnP Monitor' driver. Note: I am unsure whether newer updates will overwrite these values, so I have included a third step. Solution: Changing the monitor driver and reverting the relevant registry keys to the correct ones. Just discovered Reddit Enhancement Suite and it won't kill your eyes now.Ĭause: Windows Update installs newer Intel HD3000 drivers over the Lenovo ones, which overwrites the relevant registry keys needed for them to work. Sorry if the formatting isn't great/non-existent as it took me a while to do this write-up and I'm hungry. Shout out to the LeshCat UniFL Brightness Resolver for the initial instructions for those of you not using a X220 will need to follow the manual to find their correct registry values. Took me ages to figure this out, and there's still unanswered queries on this sub about it too. Sent this to the owner of McDonnellTech first but figured I'd post it here for more visibility.