I've just loaded the Home edition. As the XP Home system was going to its initial restart a dialog box opened. It was only on the screen for an instant and the screen went blank going into restart. I could see an X in circle on the left side of the box.
avast! providers did not start... the X in the 'a' blue icon means: all providers disabled.
It may have been notifying of a problem with the download.
What do you mean? You've downloaded the setup file and it has errors?
What I open Outlook, a partial Avast screen also shows over the Outlook. It appears to be the one that appears when Avast is opened. It goes away after about a second.
The splash screen is the Outlook plugin, not the avast! (engine) splash screen.
It's normal that it disappears.
I've uninstalled (Avast did not appeat in Add/Remove) using your uninstaller and reinstalled. Same problem. Any ideas?
If avast! does not appear in Control Panel,
bad news: your installation is not good...
Do you use any other antivirus in your system?
Do you have any other security applications? (PrevX, startup monitor programs, etc.)?