I have been having an issue with my computer (ASUS X550Z laptop) where the keyboard does not work on startup after I installed Windows 10. When the problem first arose several months ago the keyboard would kick in if I waited a few minutes, now I have to restart my computer several times before it works. Further, occasionally the keyboard will work on startup but once I have logged in it will fail to work.

Occasionally on the initial startup, the computer will blue screen and give me the driver_power_state_failure error. I have followed the instructions of another site to delete and reinstall problematic drivers (the keyboard drivers were not listed as problematic, but I reinstalled them anyway). However, this has not provided a solution to either of the issues. Although I am not sure if the driver error is related to the keyboard's lack of functionality, I am certain that the keyboard is not the issue as it works as intended when I restart enough times.

Additional information:
CPU: AMD Quad Core A8-7200P
OS: Windows 10 Home Version 10.0.10586 Build 10586
System Manufacturer: ASUSTek COMPUTER INC
System Model: X550ZA