Why can't I login to Xubuntu (and other issues)?

view full story

http://askubuntu.com – I have Xubuntu 12.04 LTS installed and I'm having a few issues: Let me start with the first. I was on the road, so to conserve power, I turned of the wireless card via the Network Connections manager, but the laptop anyways drained down the 0%. So when I got to start it back up, I tried to turn on the wireless. Clicked the icon, but options were there, but they were disabled (couldn't click them). Then after performing a restart, when I log in, it says "Check Battery [OK]" then goes back to the login screen. I can still access my account via the virtual terminal, but I still cannot get t (HowTos)