Power inserter

After some strong wind & frequent short power outages this afternoon our Directv is not working.  We get error message 771A on our HDDVR & 771 on the other tvs.

I called customer service & was advised to find & reset the power inserter (pi).  However it does not appear to be connected to any of the boxes in the house (we have 4). 

We do have a white box attached to the DVR that was added a few months ago when we added whole home dvr access.

I am at a loss...I cannot find the pi...can anyone give me an idea of where else to look?  Our satellite is mounted on the roof of the garage & I've checked where it comes into the garage but the cable just goes up the wall & into the ceiling.

Thanks in advance for your help!