Arch Linux

My laptop is Asus EEEPC 1215B,I installed archlinux two weeks,I make four partitions,/,/tmp,and /home with jfs,swap is swap,After that I found I cannot start my laptop every time after shutting down,it stops before getting into grub maybe, after a long time,it shows "no bootable media" ,the only way I can do is taking off the battery,cut off the power line,and start again,now it's OK,I find if I have no battery in my laptop,it works fine with systemd,normal suspend,normal shutdown,normal restart,I know the systemd cannot handle battery,it treats battery just like powerline?it's that right,I cannot figure out the my problem after long time searching,finally i installed acpid,and now it's quite Ok,I love arch,but I am new here,maybe I miss something,please take a look at it,maybe some laptop users run into this,it is quite annoying.