Ext7+ BIOS v2.60 or v3.00 & 4 Sticks kit = Code 00

I use bios 2.31 on my Extreme 7+.  I have found all other bios's to be problematic in one form or another. No issues at all with 2.31, funny thing is i don't even see it listed for download anymore. 

bezel wrote: Generally for me the Skylake platform is the worst. I have never had so many problems with my previous builds

Hmm, let's think about this...

The G.SKILL F4-2800C16Q-16GRK Ripjaws 4 memory, that is included in the Z170 Extreme7+ Memory Support List, is not listed by G.SKILL for use with any Z170 boards. Only X99 boards are included:

http://gskill.com/en/product/f4-2800c16q-16grk

But, we know that all four DIMMs of this memory did work fine with an earlier UEFI version. This memory uses Samsung memory chips, which are usually better than other kinds.

It seems there are some differences between memory that works with the X99 and Z170 platforms. The 3.00 UEFI is said to include improvements with DRAM compatibility. Apparently those changes were not "liked" by the Ripjaws 4 memory. Or the improvements need some... improvement.

One thing I always do (unless I forget) is before I apply a UEFI/BIOS update, I'll load a UEFI profile with stock CPU and memory speeds. I hope this will result in less of a "shock" to the memory and system, which normally will change to stock/Auto memory settings after a UEFI/BIOS update.

My update to 3.00 went fine. It even preserved my setting of RAID in the Storage Configuration screen, which I believe was true for 2.50 too.

I've noticed that higher speed memory and/or greater amounts of memory in Skylake systems tends to need more VCCSA and VCCIO. The XMP values for VCCSA and VCCIO voltages for my G.SKILL Trident Z 3200 memory are very high, 1.250V and 1.150V respectively.

I can reduce both of them to 1.150V and 1.100V at 3200 without any problems, and have gone lower but did not test that enough. This is only with an 8GB kit, 4GB x 2.

Something I have noticed in previous UEFI versions, is a difference between the DRAM, VCCSA, and VCCIO voltage settings, and the resulting actual value.

For example, given settings of: DRAM voltage at 1.35V, VCCSA voltage at 1.250V, VCCIO voltage at 1.150V.

The resulting actual voltages are: DRAM of 1.376V, VCCSA of 1.280V, VCCIO of 1.176V.

I'm reading the resulting actual voltages in the UEFI, H/W Monitoring screen, and in Windows with HWiNFO64. The UEFI H/W Monitoring screen and HWiNFO64 values are identical for all three values.

Finally my point: I wonder if the XMP values for VCCSA and VCCIO for the Ripjaws 4 memory are lower than those used for newer memory used with Skylake, like Ripjaws 5 and Trident Z. I know the VCCSA and VCCIO voltages on my X99 board system are much lower, with different memory.

The Dr Debug POST code of 00 normally means a dead CPU, or no power to the CPU, not a memory problem.

Personally, my Z170 EX7+ PC goes into and out of Sleep fine, I use it all the time now that I must wait for NVMe SSDs to POST... yes they are slow to POST.    If you like a slow, long POST, get an X99 system and put NVMe SSDs in it.

UEFI 2.31 was a Beta version, that was migrated to a regular release with other changes, 2.50 I believe. ASRock does not release endless Beta UEFI versions, and does not keep them available for download forever, like another mobo manufacture I'm aware of.

One comment about the Skylake platform being less stable, or having more issues than other platforms in the past. Did we use Windows 10 on those other platforms?