Because it contains malware traits. Just uninstall it.
If Avast is telling you that a file from system32 is a virus, this means that file could be infected with a virus. If you have the option, just delete the file as you would any other file through Avast; system32 tends to be subject to viruses more than other files, but Avast will usually take care of the virus without problem. However if Avast is telling you that all of system32 is infected -not just a number of files- then you should either seek professional help as this often needs to be delt with on a case by case basis. Or put it into the Avast chest because this will perserve the functionallity of the operating system, however this is not recomended.
This really depends on the file. If you have a useless malicious file, such as a infected downloaded file, that has no system importance, then yes, it would be recommended to delete that file. However if it is a infected system file or other important file DON'T delete it. Leave it in the virus chest and see if it is possible to repair it.
It Deletes the entire infected file, if its a system file this is bad, but if its just a normal non essential file that you don't need you can go ahead and delete it
http://forum.avast.com/index.php?board=4.0
so if there is no bitrate then the file is infected ?
One can find more information about free downloads for Avast Antivirus from these sources: Avast, Cnet, Softonic, Brothersoft, Yahoo Downloads, After Dawn, Freebies, PC World, File Horse.
Try to clean or delete it. If that doesn't work take it to a professional or restore your computer before you got the virus.
Heal function tries to remove the virus from the infected file. If the file is really infected so it may work or not (because it is difficult or it is not really infected), but if it is not then it will not work. If AVG manages to remove the virus, the file is free and not infected anymore, if not then you should move it to the vault or delete it.
Sandbox is a very useful function of Avast Antivirus. Can open the risky file in sandbox mode. Then if the file is a virus it would not be able to attack your computer. The sandbox create a virtual environment into your computer. So, when it get back from that environment it become the same as previous state. Go to the sandbox option and select Auto mode. Avast will notifiy you if any suspected file is being open. It will recommend you to open in sandbox mode. You can also manually open any file in sandbox mode by clicking right button.
Get a what? If it is a virus, then you probably can!
Assuming you know the location of the infected file: For example if there was an infected file at c:\temp\abcde.exe Load CMD (cmd.exe) At the c:\> type del c:\temp\abcde.exe this will delete the infected file aslong as the file is not being protected or has permissions preventing deletion.
No, but your computer can get infected from the actual torrent file that you're downloading.