According to the latest information Q1U owners have found reading the Q1U manual:
"Using AVStation Now, you can easily and quickly play music, photographs, movies and DVDs when the computer is on/off.
When the computer is on or off, press the
AV button (AV).
The AVStation Now program is launched."
This means that the Q1U is just equipped with a hot button or a launcher, that points to the AVStation Now Program. In another words, the Q1U does not have the instant on partition with XP embedded like it used to be in the old Q1 devices.