@Fernando:
Not really, Im still fighting against the USB Power Error, more you can see here --> [Guide] How to get full NVMe support for all Systems with an AMI UEFI BIOS (264)

I made the Speedtests with my keyboard and mouse connected to USB 2.0 ports. Then I put the NMVe adapter card into a slower PCIe 2.0x1 port and it looks like the Error is gone but the Speed drops down to SATA values. This Is not a solution.

During the fresh W10 installation I wondered, that the W10 installation was not able to install to 970EVO without additional drivers /Samsung NVMe driver v3.0.0.1802 WHQL for Win10 x64/. The disk was visible, but the installation was not able to create a partition even when I was able to create a partition manually with the installation options.

@Paulos7:
Thank you for your reply. I have a Sandy Bridge CPU so this is probably the issue - nevermind!

Thanks again

EDIT by Fernando: Unneeded fully quoted post replaced by directly addressing (to save space)

@Fernando
May I ask you to modify for me an older BIOS, because of pad files issues. I will test the 970EVO with the older BIOS version to see if I will have the USB power issues.

Here is a version I have used before the BIOS modd.
https://dlcdnets.asus.com/pub/ASUS/mb/LG...O-ASUS-1504.zip

THX

@Fernando
Yep, something is wrong with that link.
Try this please: https://www.asus.com/us/Motherboards/Z87PRO/HelpDesk_BIOS/ version 1504 is 9th from the top of the list

@Fernando

Thank you for your amazing work!

Could you please help me by modding the bios for my P8Z77-M for full NVMe support, and also any hidden bios pages and updates such as these which have been mentioned:

iGPU GOP UPDATED (Integrated GPU UEFI driver)
LAN PXE UPDATED (Intel/Realtek/BCM)
AHCI/RAID UPDATED (Intel/Marvel/JMicron)
ASUS ROG LOGO

https://www.asus.com/nz/Motherboards/P8Z77M/HelpDesk_BIOS/

Thanks for being such a great supporter of this community!

Donald Boyer,
Queenstown, New Zealand

Thanks for all your help Fernando.
In the end , my problem was a faulty M.2 slot on the Gigabyte GA-H97-Gaming 3 board.
I grabbed a spare Gigabyte GA-H97-Gaming 3 board, flashed it with the original Gigabyte F7 BIOS, installed the Samsung 970 EVO drive, and it showed up straight away.
The BIOS was setup exactly the same way as the original board, so I wasted a lot of time on the bad board.
I will post some speed benchmarks shortly, as the 970 EVO is installed on a X2 M.2 connection, as my board does not have the X4 M.2 connection.

970 EVO CrystalDiskMark results using a M.2 X2 connector on a Gigabyte GA-H97-Gaming 3 Motherboard.
Slower than an M.2 X4 connector, but faster than a SSD SATA drive

Hi Fernando! I have a P8P67 Deluxe board with ICY Box PCIe adapter for M.2 SSD 970 Evo and I tried your manual. I just flashed my original BIOS with the module NvmExpressDxe_Small and now my BIOS does not start anymore. I only see the Asus boot screen, where you should be able to press <Enter> or <ESC> to enter the BIOS setup, but it does nothing. I also recognize, that the boot image is much smaler than before. Then I tried to clear the CMOS on my P8P67, but nothing changes. I also tried to perform a memory test, which I think works, but I am not able to enter the BIOS setup. Now I put out the CMOS battery, but I dont think it works.

Do you have any idea?

Thank you for your support!

Hi Fernando and thx for the support :)

Sorry I can't access my ssd , where the firmware is stored - but these were my steps:

1.) I extracted original firmware: afuwinx64.exe extracted.rom /O
2.) I started MMETool and searched for CSMCORE and then inserted NvmExpressDxe_Small "in compressed" mode.
3.) I flashed the original BIOS firmware from asus with afuwinx64.exe original.rom and then the modified version afuwinx64.exe modified_firmware.rom /GAN
4.) I restarted the PC without SSD plugged in and BIOS appears first - so flashing was fine I think. I changed the boot order for SSD (PATA SS or something like that), saved BIOS and did a reboot.
5.) Now I am stucking in the asus boot screen.

What I did so far: Unplugged all devices, SSDs and the PCIe card. Cleared CMOS with button several times with/without battery. Short-Circuit the battery connections for one minute without connecting the power plug (asus online manual). I also tried the memory test, which seems to work, but also stuck in the asus boot screen.