The sound is an issue nearly everyone has with an A105 lappy after a quick google search.http://ubuntuforums.org/showthread.php?t=635215&page=3
"I just fixed this for someone yesterday. The answer I got from google was to open /etc/modprobe.d/alsa-base and at the end of the file in the options area add this line:
options snd-HDA-Intel auto
and then reboot. At least I think that's what it was.
perhaps that may work.
Can you post what kind of wireless card you have?