My Hackintosh has a wide range of problems right now

I've gone through a tone of tutorials, guides, etc, but I can't seem to work out how to get these working.

1. PCI Wi-Fi Card not being detected
2. NVIDIA Web drivers not working, always defaulting to OS X drivers on startup.
3. System only detects 8GB of RAM, not 16GB.
4. System detects that I have 3200Mhz RAM when I have 2133Mhz.

If you could even provide a solution to one of my problems that would be great, thanks.

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