[ Confused new to pc’s and Avast found I had Win 32 Trojano-141 had probs moving it, what harm does this trojan do? any help would be grateful for, thank you???b][/b]
Try this link and see if it helps you.
http://forum.avast.com/index.php?board=4;action=display;threadid=5373;start=msg39361#msg39361
Thank you Bob, information has been a great help
SUSZANNAH
You’re quite welcome but google deserves most of the praise.
I simply did a search and picked the link which seemed to have the most info. 
CORRECTION:
This answer, referres to your mother board problem. The info for the virus problem is simply a referral to a post made by Technical.