X399 C0 error code

hanamichy wrote: By the way, do I j plug this cable directly into my psu? The psu only has 6 pin connections.

Six pin connections sound like a PCIe/video card power connection. They are NOT compatible with CPU power connectors! They should not fit into the CPU power connector(s) on a mother board, but some older, less well designed PSUs may allow them to be connected.

A proper CPU power connector cable will have either a 4/8 pin connector, or 8 pin connector. A PCIe 8 pin connector is also NOT compatible with the CPU power connection on a mother board.

MisterJ wrote: hanamichy, look at this one: https://www.newegg.com/Product/Product.aspx?Item=9SIA6ZP3N68337&cm_re=enermax_platimax-_-17-194-098-_-Product In the specifications: 1 x Main connector (24Pin) 1 x 8Pin CPU 1 x 4+4Pin CPU 4 x (2 x PCI-E 6+2pin) 2 x (4 x SATA) 1 x (4 x 4pin Molex + FDD) 2 x (2 x SATA + 2 x 4pin Molex) I am not recommending this one, but I do use Enermax.  Be sure your new PSU has a 1x8 and a 1x4 (or 4+4) specifically for the CPU.  We need to know about your system especially your video card.  How did you size your PSU?  I would suggest at least 850 Watt - hope others will comment.  Enjoy, John.

If money is an issue atm, you can split that 4+4 wiring and try using a 4-pin on the 8-pin header and the other 4-pins to the 4-pin header. You would use the 4 pins of the 8-pin header that are closest to the edge of the MB.

No an ideal situation, granted.

As MisterJ spoke, you need a proper PSU

hanamichy, please do not be afraid of updating your BIOS.  Always use the Instant Flash in the BIOS, never the Windows version.  If your board does not have 1.30, you definitely need to update it.  These new boards have a Flashback feature that does not even require a running CPU or boot-able system to flash the BIOS.  Please see your manual about this feature.  If all else fails, the flash chip is a plug-able module and there are several vendors that will sell you a new one with your requested BIOS version.  You can just replace the flash module and be good to go.
Also please do not be afraid to include your system specifications in your signature.  I am particularly interested to know what CPU cooler you are using and what CPU temperatures you are seeing.
Here is a couple of DLs you might like if you do not have them.
CPU-Z
Use the Softwares button to see others including HWMonitor.  It will tell you temperatures, voltages and more.  These are all free.
If you look at your memory specification, you will see:

SPD Speed 2133MHz

This means 2133 is the default.  You need to enable XMP to get the 3200 speed as wardog said.  There is some possibility that your system may not be stable at 3200 and others will have to help you adjust some BIOS settings.  I know little about OCing. 
Please post your system specifications and CPU temperatures.  Thanks and enjoy, John.