this sounds like it could also be a overheating issue have you look at the cpu heat.
the cpu fan mayhave become unseated when the case was moved or it could be in a spot without good cyclation to few cpu fans maybe . I went over bord on my case and have 8 fans in it
my mobo came with softwere to look. if you do not have some I can see if I can dig some up on the interwebs