I plug it in and turn it on, all their lights and fans turn on (mobo, graphics card, new CPU fan, everything seems to be running) and yet the screen still gets nothing. No plot or anything, just a blank screen. I've taken and put everything back together, and it still happens.
Could it possibly be the CPU fan? I've yet to put the old one back, but I really see no way of it even causing that so I haven't really bothered with it.