Ok, details if you don't mind;
1. The PS you
were using, was that, the one that came with the unit?
2. Is it a switching supply or a old school 'brick' (heavy)?
3. What are the specs on that and the replacement supply (output voltage and amperage)?
4. How long have you had this Q10?
5. Last question; did you have a HDD installed all the time or was that added recently?
Looks like a flashing red/white power indicator means low voltage and the 'read' operation during a 'flash' procedure. (An addition to the FAQ?
)