To anyone that has problems with the installer failing - you have to: 1. uninstall the current drivers and reboot 2. extract the drivers installer with Winrar or 7zip 3. open Device Manager and find your graphics card. Double click it and select the "update driver" button, then point it to the extracted files 4. The system will install the driver only - reboot just in case 5. NOW, run the installer normally. It will complete without failing.
It's weird. Earlier, I've tried only uninstalling the drivers and running DriverSweeper, but that did not help.