I have an Avast! product on one of my computers. My sister didnot and has a serious virus infection. Can I install Avast! on her computer and clean the infections?
it depends what malware you have…
so i suggest you start with this, and post the logs so our malware removal expert can have a look
Follow this guide from our expert malware remover Essexboy
http://forum.avast.com/index.php?topic=53253.0
( post the logs here in this topic and not in the guide )
To avoid using multiple post with copy and paste you have to attach the log`s
Lower left corner: Additional Options > Attach ( Malwarebytes log / OTS log ) save OTS log as ANSI
Essexboy will look at the logs when posted…