I do not think this is a virus, in the case of a virus, Identify the problem, disable system restore, run a scaner in safe mode, if you dont see the problem; run a spyware scaner,turn on system restore; enable every scaner you have, they work, an anti virus software doesnt conflict with another, the definitions may read bad information or they may use the same port, that has to do with an aspect of the program, I refer to the more popular programs. `