|A factory restore will solve the worst infected problem systems. Acer site will have the instructions, it is usually tapping a key or two early at start up and following the prompts.|
** Understand that ALL that you have on the drive will be wiped off and the machine will be reset to the way Acer originally shipped it. This is both good and possibly bad if you had important files that are not backed up somewhere else or programs that you cannot get again (reinstall) or will cost you additional money.
IF this is not acceptable to you and you are willing to try following through on many steps, post this again on the 'Security and Virus' Forum with as much details as you can and someone may be able to help you (though it may take a lot of your time).
You have to be a little bit crazy to keep you from going insane.