I have a V9 with a CC 2.0 that does that exact same thing sometimes when I swap the hard drive out. Probably your chip is fine, it just needs to be re-flashed. If I remember correctly I just had to re-flash the firmware, I think the boot manager software was OK.
I believe it is the safety feature of CC chips that is kicking in. If it thinks the firmware may be corrupt it will revert back to the minimal firmware that will boot the Sony browser. Probably all you need to do is download the latest firmware and boot manager software from Crystal-Chips website, create a CD with it, boot it and select upgrade firmware from the menu. If that does not work then also select install boot manager and tell it to install into CC flash memory.
It was pretty confusing when this happened to me a couple of times. Now I try to install my games over a network connection so that I do not have to remove the hard drive and go through this process all over again.
Hope this helps.
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