If you're still within your trial period, return it. The 970 is buggy from top to bottom. Yes, when it works it's a pleasure but the unit obviously has issues and I'm surprised Outlaw is still selling it.
In my opinion, they owe it to the public to stop selling such a buggy unit and start offering a return policy for us 970 users.
I have my workaround for the "no audio" problem, simply cycle through the audio modes. My workaround for distortion/popping noise, I always turn on my 970 with the amp off, turn off my 970 with the amp off as well. My workaround for when the unit stops responding, unplug it from the wall. My workaround for when the front panel buttons don't respond, only use the remote.
Otherwise, the unit is great, when it works properly. ;-)
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Onkyo PR-SC886 (Retired Outlaw 970)
Outlaw 7100
Outlaw 200 Monoblock x2
M&K 851 for L/C/R
Axiom QS8 for SL/SR/1SB
SVS Pb12-ISD/2 (x2)
Sony VPL-HW15 (Retired Infocus 7205)
Sony PS3 / Pioneer DV-533