Hey OracleGrim,
First let me say welcome to the forum. What you need to do is a search of this forum for the topic about the question you asked and you should find an answer. I typed in a search for AAVM subsystem and this is what I got:
There´s a red circle on avast! a-ball icon in system tray and when I click on it, the error message appears saying "the AAVM subsystem detected a RPC error". How to fix this?
A: First, use Windows Update to be sure that the RPC service is up to date. Then restart your computer and check if the problem persists. If it persists, follow these instructions:
1. Right-click the icon MY COMPUTER and select MANAGE.
2. In left column unroll SERVICES AND APPLICATIONS.
3. Click on SERVICES.
4. In the right column, look at the state of services avast! Antivirus and Remote Procedure Call (RPC).
5. If any of these services isn´t set to start automatically, set it that way (right-click it and select PROPERTIES and the STARTUP TYPE set to AUTOMATIC).
6. Restart the computer.
This solution works on Windows NT, 2000, XP and 2003 only.
Look about half to three quarters of the way down the page and you should find your answer. I hope this helps.