driver power state failure blue screen

[prince poly]

Hey, am using a HP envy i7 laptop i usually don't switch it off regularly instead i keep it into sleep mode, last night it failed to come back to life from sleeping,it brings blue screen error message that DRIVER POWER STATE FAILURE even after several restarts :-(
How can i fix this without damaging my files coz my laptop is useless for now

 

[Slashgeek]

Try performing a System Restore operation to the time when things were still functional. You can spam F8 as Windows boots to invoke the Advanced Startup Options menu, and from there navigate through the Repair menu to get to System Restore. Alternatively, use Windows installation media to boot to the Advanced Startup Options menu.