I was undervolting my I7 8750H the other day to around -80mv. I did stress test for a while, nothing broke, so I opened and played BF 1. As soon as I was in game, the laptop reboot, I went back into Intel XTU to check and everything was back to default. However, the sound was not coming out of the speaker even though if I pluggin headphone in, I still hear music. Moudpad right click and left click dont work anymore, and touchpad sometimes work, sometime doesnt. Tried uninstall and reinstall drivers as well as doing a clean reset and recover windows from previous image, but they still didnt work. My window 10 was updated with 1803 version 3 days ago.