Sky HD Freezes / Locks Up / Powers Off / Non-responsive
Sky HD and Sky+HD boxes freezing, locking up, powering themselves off etc are not uncommon. A quick google search will reveal just how many people suffer from this occurrence.
Their connection to other devices is in most cases not the cause of the Sky box fault.
In order to resolve this issue, HD Connectivity’s experience is that a full Sky system reset is the best medicine. Instructions on how to do this can be found here: Sky box full system reset