I inadvertantly allowed my 10-month old PEG S360 to run out of battery power, and now (after charging) it will not start up. All I get is a blank screen with absolutely no response at all.
I have tried both the soft and hard reboot to no avail. I have a backup of my data which I can easily restore once it is operational, so that's not an issue.
How long did you let it charge for. Might want to let it charge for a couple of days. Make sure that the charger is making good contact with your clie. Had same type of problem and this did the trick for me.