Crosshair VI and Nighthawk memories gives Q-code 4F ??

[Federicoz45]

Hi to all,
please I need help. I have:
CROSSHAIR VI HERO
TEAMGROUP NIGHTHAWK RGB 16 GB 3200 MHZ
RYZEN 5 1600X
Bios 1501
I was running fine with bios 9920, both memory sticks installed. Then I've upgraded to 1501 and it starts to beeps 6 times and displays 4F.
The only way to boot is remove one stick of memory. I've tried even to revert to 9920, but no way its still giving 4F with both sticks (slots a2 b2).
I've cleared cmos, even removed the battery for a while, nothing, the mobo does not accept both memory sticks installed.
Anyone has an idea?
Thanks

[syldon]

Have you tried clearing the CMOS by removing the battery for 5 minutes. The CPU can sometimes get a switch locked up, and only by a complete discharge can you release it.

If this does not clear it then I would contact Asus support directly.
https://vip.asus.com/VIP2/Services/QuestionForm/TechQuery?lang=en-us

[Federicoz45]

Damn, I've tried everything by now, maybe the last chance is to remove the cpu also, then clear cmos or boot the motherboard so it resets.
Well, a 230€ motherboard supposed to be in the best choices for ryzen, having such issues and headaches is really disappointing....
Thanks for the advices anyway.

[Federicoz45]

Finally I made it, the bios was badly wrote by ez flash app inside the uefi. Flashed with usb flashback solved the problem and now cold boots fine at 3200 mhz.
Beware the ez flash, learned by myself that this board upgrades fine via flashback.