Hello,
I have a strange problem today.
First, I notice that the resident protection of Avast (home ed, win xp, french) is halted (little red sign on taskbar icon). All providers are off.
I try to start them manually but I receive a message : "this provider could not start" or something (and that's all).
Intrigued, I decide to reinstall Avast. I download the latest version, I click on the downloaded file but then I receive a new message : "This installation does not contain all required components. Please use a complete version." (or something, message is in french).
Then I don't know what to do. I can't use the installed Avast and I can't seem to be able to reinstall it.
I suspect a nasty virus passed through. I checked the running processes and found nothing weird (csrss.exe, smss.exe, lsass.exe - dunno what it is, but labelled M$).
Thank you for your help.