If it was my computer, and YOU really need to be sure you know what you are doing, I would re-seat the R.A.M. just as a sensible first guess at the problem.
It's not the least charm of a theory that it is refutable. The hundred-times-refuted theory of "free will" owes its persistence to this charm alone; some one is always appearing who feels himself strong enough to refute it - Friedrich Nietzsche