X370 K4 Bios Update Fail to post after

parsec wrote: It's much to early to come to conclusions about what is happening with the Ryzen P-States, etc,  for many reasons. One important one is, the monitoring programs don't have Ryzen right yet. Even HWiNFO needs some work. CPU-Z cannot deal with Ryzen's RAID, it locks it up before it's done with its detecting phase. Plus I've found that the UEFI/BIOS option settings for VCore and multipliers seem to affect what is shown in monitoring programs. I wish HWiNFO could show the P-State levels and percentages like it does with the Intel C-State levels and percentages. Here's my HWiNFO example: This is with the core multipliers set to 37, and the VCore set to Offset, and the offset value left on Auto. You can see the CPU frequency never changes, like yours. But the VCore can drop to a super low 0.384V, and yes it is stable, I just took that screenshot a few minutes ago. Also check the minimum core power values, below 0.1W. I'm using the Ryzen power plan, Windows 10. C n Q enabled, C6 enabled, and the P States expanded in their screen in the UEFI. I have seen the 1.5V+ VIDs, with VCore set to Auto. Get rid of Auto if you want that gone. Just a VID though, so if like an Intel processor, not the true VCore. With my Intel systems, Z270 and i7-7700K for example, if I used the Windows High Performance plan, the CPU frequency would stay high, and never drop to 800MHz, with all C states down to C7 enabled. But the C State monitoring in HWiNFO would show I was in C7 90+% of the time. IMO, to early to say exactly what is going on precisely. Our tools are not good enough, and we are still learning Ryzen.

debaser wrote: Hello, I noticed you have a fan for cooling VRM area, may I ask you how did you place it?

Good eyes, it was not hard but also not simple. The PC case you are using will make a difference if is possible to do or not.

This picture is of a different mother board in the same PC case I'm using for my Ryzen system. I'm using the same custom fan mount I made to hold an 80mm fan to cool the VRM heatsink.

It's a 2" L bracket from a hardware store, with the fan held on to it by a zip tie. The L bracket has holes in it, with a #6x32 screw with a plastic spacer connecting the L bracket to a magnet in the round chrome plated thing on the far right. The magnet is very strong, and hold the fan in place on the mount. The magnet thing is from a surplus store, so matching it will be difficult. I've changed the fan mount a little since this picture was taken, adding a second screw and magnet.

You can barely see the VRM heatsink, it's the red part you can see behind the fan. That's an ASRock 970 Performance /3.1 that I used with an FX-9590.

That case is a Cooler Master HAF XB "Test Bench and LAN box" PC case. It is nothing like a standard PC tower case, and just by luck allows me to mount the fan near the VRM heatsink.

https://www.newegg.com/Product/Product.aspx?Item=N82E16811119265&ignorebbr=1

Honestly, this fan does not make that much difference, since this case has a 200mm fan in the top cover, blowing air down onto the board. If you can insure some air movement across the VRM heatsink areas, they won't over heat. When I was stress testing my 1700X at 3.9GHz, the CPU temperature was higher than the VRM temperature.