My first problem is that, apparently, you cannot make the screen brighter on some lenovo laptops with windows 8. The Brightness- button is working, but once you make the screen dimmer, you cannot make it bright again using the brightness settings. I found out however that you can revert by rolling back some drivers. It worked every time when my screen would get dimmer for whatever reason. Yet, yesterday, it happened again and I forgot what to do about it and I ended up uninstaling the Intel Graphics 4000 driver from my computer by mistake. When I tried reinstalling it, it would display the following message: "This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)" I thought that I could undo all of this adventure of mine by using the system restore and revert back long before this all started. However, every time I tried to use system restore it wouldn't work, due to "error 0x80070005", recommending that I turn off my antivirus in order for the system restore to be able to access a certain file. I went as far as uninstalling anything reminescent of an antivirus from my computer and disabling windows defender. However, it is still not working, displaying the same error. So, here is what I need help with: Solving the error code 31 of my display adapte driver. and/or Solving the error 0x80070005 of the system restore Any of these are appreciated. Thank you.