Hello, Jeff.
For the power and volume button pad, there may be one or more problems with it. Please take a look at the volume button pad section on our [[LG G3 Troubleshooting#Section_Volume_and_or_power_button_does_not_respond|troubleshooting page]]. It sounds like it could be a dirty connector or misaligned button pad. The power button may not be responding due this problem as well.