POST Error - 'Test CMOS'

[pooky2483]

I bought a new PC from PC Specialist (PCS) end of last year and in Jan this year it decided to brick itself.
Upon boot I get a post message saying ' Test CMOS'.

I have posted a message on PCS asking for advice, but have hit a brick wall in what to do. I've removed each GFX card, leaving the other one in to test if the fault is one of the cards, but this did not change anything I've even removed the CMOS battery and replaced it, while powered down and power lead out.
I've left it off for over a month and a couple of days ago, I turned it on in the hope that the problem would have somehow ficed itself, but I got the same POST, 'Test CMOS'
I've also 'Googled' the problem, but I found nothing in relation to my problem, not even a POST error list.

I am making a last ditch attempt at getting help, from those of you who are more knowledgeable with a ROG system before I request an RMA.

My spec is;
Case
BE QUIET! DARK BASE PRO 900 REV. 2 FULL TOWER GAMING CASE
Processor (CPU)
AMD Ryzen Threadripper 3970X 32 Core CPU (3.7GHz - 4.5GHz, 147MB CACHE)
Motherboard
ASUS® ROG ZENITH II EXTREME ALPHA (DDR4, Wi-Fi 6, CrossFireX/SLI) - ARGB Ready!
Memory (RAM)
256GB Corsair VENGEANCE DDR4 3000MHz (8 x 32GB)
Graphics Card
2 X ASUS Turbo GeForce RTX 2070 Super EVO 8GB GDDR6
1st M.2 SSD Drive
500GB SAMSUNG 970 EVO PLUS M.2, PCIe NVMe (up to 3500MB/R, 3200MB/W)
1st M.2 SSD Drive
500GB SAMSUNG 970 EVO PLUS M.2, PCIe NVMe (up to 3500MB/R, 3200MB/W)
1st M.2 SSD Drive
250GB SAMSUNG 970 EVO PLUS M.2, PCIe NVMe (up to 3500MB/R, 2300MB/W)
DVD/BLU-RAY Drive
24x DUAL LAYER DVD WRITER ±R/±RW/RAM
Power Supply
CORSAIR 1200W HX SERIES™ MODULAR 80 PLUS® PLATINUM, ULTRA QUIET
Processor Cooling
Corsair H150i RGB PRO XT Hydro Series High Performance CPU Cooler
Extra Case Fans
3x Corsair LL120 RGB LED Fan + Controller Kit
Sound Card
ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
Network Card
10/100/1000 GIGABIT LAN PORT (Wi-Fi NOT INCLUDED)
Operating System
Windows 10 Professional 64 Bit - inc. Single Licence [MUP-00003]

[dano27146502]

I found your motherboard manual on the Asus website.

There is a jumper (LN2_MODE) on the motherboard you can change to fix a cold boot bug (Page 1-15). I attached a picture of that page of the manual. Hopefully that will fix it.

The other picture is of the POST Q-LEDs on the motherboard, they will stay on if it detects a problem. Yellow for DRAM, Red for CPU, White for VGA. The green light means it passed the POST and will boot normally. Check and see if any of those LEDs stay lit.

Let me know what you find.

[dano27146502]

Here's the manual if you need it.

https://dlcdnets.asus.com/pub/ASUS/mb/SocketTRX4/ROG_ZENTH_II_EXTREME_ALPHA/E16228_ROG_ZENITH_II_EXT...

[pooky2483]

Didn't work.
The little jumer was a sod to get off and back on again as I didn't have any tweezers. I've also tried using the 'Reset CMOS' button at the back of the tower and still no joy.
As for the coloured LEDs on the MoBo, it stops at white - VGA. I've tried it with both, each one and none (I have 2 GFX cards) and it always shows WHITE. That could be just coincidence.

was woth a last try as I'm sending it back to PCS to get fixed.