~ef7194.tmp is a temporary file. It is associated with the SafeDisc copy protection software.
This process has been known to short the sound on some video games and cause further havoc with others.
Various other files in the Windows registry can cause poor functioning if they are damaged or not pointing towards the correct processes. This can happen because of previous viruses (anti-virus programs don’t always completely fix the registry) or any number of other reasons that have nothing to do with the current user.
We highly recommend at least one scan a month (preferably, every week) to check for errors. Failure to do so can slow the Windows operating system down ZookaWare PC Cleaner offers a free registry scan for interested parties.