oh, poor mate...

Seems your n9 is going to lose all the batter power and gonna die...
well, I have encounter this situations for TWICE.

dsme ACT_DEAD and no bme.

And the phone won't be charged and I have the battery running out problem, boot logical loop:
http://mg.pov.lt/maemo-irclog/%23mae...11-22.log.html
(search for "charge")
no OS booting? not charging; battery out? no booting.

luckily, I successfully use flasher to force the phone into a flash-mode which can do the charge work, thank god...
(that cost many times to try out, should be patient).

as soon as my n9 had enough power (11%) to boot, then I keep charging it and dare not to let the battery lower than 20%.

But your problem seems much worse. don't even seem to charge even when OS running.

you'd better check dsme & bme state.
If /sbin/getbootstate show ACT_DEAD, you got the right problem.

You probably should send the phone to the nearest nokia care to be fixed.