Right, I made this PC a few weeks ago and had a few minor hiccups, in that the PSU was making the crackling sound but on a huge scale, now after replacing that with a higher quality PSU and plugging it in, suddenly the crackling noise is still happening (but quieter) and is no longer coming from the PSU. It seems to be coming from the fan at the front. I tried taking the front panel off but I couldn't. So really it's two questions, How do you take a CiT spectre front panel off, and what makes fans make this noise?