What's good? Here are my suggestions.
CASE: Antec, NZXT, Silverstone, Fractal Design, a few other companies I know of make some decent cases with noise reduction. Look into those.
CPU: Get an Intel i5 or i7 processor.
CPU FAN: Noctua or GLED
MOTHERBOARD: Currently there are two platforms that I know of right now: Z77 and X79. The Z77 is the mainstream and more cheaper platform and the X79 is more on the power user side of things. Go for either or depending on budget. The important thing is to match the CPU socket with the motherboard socket.
POWER SUPPLY: 600W minimum. Depending on how many video cards and peripherals you add you may need more.
RAM: Get at least 8GB of RAM. That should be plenty. GSkill, Crucial, and Cosair are good.
DISK DRIVES: I say have two minimum, but I recommend 3 disk drives. One for your Operating System (Windows) and programs; one for samples (ie. Kontakt libraries, drum samples, orchestra samples, etc.) and another for just your straight up recordings. As for SSD vs HDD, it's more economically sound to go for the HDD. That said, SSD are signifcantly faster in terms of loading. What you could do is get a SSD for your OS and programs and HDD for the rest of your samples and recordings. I had good experiences with Seagate for HDD as well as Western Digital. Crucial makes good SSD.
VIDEO CARD: Umm... if there is not gonna be any gaming or video editing, get a video card that is simple and fanless to reduce noise.
SOUND CARD: I had good experiences with RME. Focusrite is good too. Avid actually as some pretty good audio interfaces right now as well.