I updated to windows 8.1 in December (approximately 1 month ago) and everything seemed to be working fine, then I downloaded a 30-day trial for minitab15 as well as allowed for my laptop to peform a few more updates before shutting it down last night.
Later last night I turned on my laptop to see that the sound is not working at all ("no audio output device is installed") and the brightness would not adjust.
I have tried recovering my laptop and restarting it and nothing has changed.
Serial: {Personal Information Removed}
Product: D1C03UA#ABL
Model: g6-2368ca
EDIT: added serial, product, and model numbers