I have almost the same problem,
ACER Aspire 5250
I see an error when cold booting to the 22.214.171.124-amd 64 or 126.96.36.199-amd64 kernels: I get memory conflict.PNP0A08:00 and 'host bridge window' there where memory address but scroll off the screen to fast to read. I am able to recover by booting to 'recovery 188.8.131.52-amd64' and switching user to my login and then change to run level 5, login it works OK. I can then reboot into the 3.0 kernel. It also works, if I shut down it is broken again.
Anybody have a fix.
PS: this has something to do with battery power. I switched to battery and it freezes!