Bios resets after being powered down overnight. But fine if shut down for a few hours?

[mobomofo]

I've cross posted this on a few forums here's the other posts:

 

Reddit

 

 

 

Tom's Hardware

 

Gigabyte Forums

 

My set up:

CPU: Threadripper 3960x

https://www.amd.com/en/products/cpu/amd-ryzen-threadripper-3960x

 

Mobo: TRX40 Aorus Master Rev 1.1 (updated to latest Bios Fbi)

https://www.gigabyte.com/uk/Motherboard/TRX40-AORUS-MASTER-rev-11#kf

 

GPU: Zotac Gaming Geforce RTX 3090 Trinity

https://www.zotac.com/us/product/graphics_card/zotac-gaming-geforce-rtx-3090-trinity

 

Display GPU: EVGA GTX 980ti

https://www.evga.com/Products/Specs/GPU.aspx?pn=0FAB4AA9-8613-4969-A376-5EFEB7172C8C

 

RAM: Corsair Vengeance RGB Pro 128gb (4x32gb)

https://www.corsair.com/uk/en/Categories/Products/Memory/Vengeance-PRO-RGB-Black/p/CMW128GX4M4D3600C18

 

Power Supply: Corsair HX1200

https://www.corsair.com/uk/en/Categories/Products/Power-Supply-Units/hxi-series-2017-config/p/CP-9020140-UK

 

Hard Drives: 2x WD HDDs 6x SSDs (I'm using every available Sata connection on the Mobo)

 

CPU cooling: Fractal Design Celsius+ s36

https://www.fractal-design.com/products/water-cooling/celsius-plus-s36-dynamic/celsius-s36-dynamic/

 

Case: Fractal Design Meshify 2 XL (Mentioning this as it has it's own fan control board built in)

https://www.fractal-design.com/products/cases/meshify/meshify-2-xl-dark-tempered-glass/black/

 

 

Since building this PC a month ago the Bios has reset when the computer is powered down over night. So when I come to turn on the PC in the morning it spends 5 minutes with all fans at full speed (I assume this is the BIOS being reset once again?). Then it boots 4(ish) more times before it finally posts. If I access the bios settings at this point I get the message saying 'BIOS has been reset. Please re-config your BIOS setup items if needed.'

 

I have updated the BIOS twice (once to FBh and more recently to FBi). The only settings I'm adjusting in the BIOS is the RAM XMP profile and changing the initial display output from PCIE 1 (where my 3090 lives) to PCIE 4 (where my 980ti works as my display GPU). I've also made sure the RAM is installed in the correct slots as I'm only using 4 out of 8.

 

My BIOS switches are set to single BIOS and I'm using the main BIOS

 

I have on three separate occasions checked all of the power/sata/pcie connections and everything is sitting snug and firm.

 

I have replaced the CMOS battery (original battery was registering 3.1v or 2.6-2.9 with resistance. New battery is measuring 3.3v or 3.0-3.1 with resistance). I left the PC switched on all day with the new battery, but it still reset when I had it turned off overnight.

 

The Clear CMOS jumpers are not connected in any way.

 

I have tried swapping the 980ti for a low powered GTX1050 in case the initial power draw was too much.

 

I have powered the PC down, turned off at the plug and unplugged for over 1 minute, it boots absolutely fine from this state. It also boots fine if I leave the PC off for a few hours. But if I leave it off overnight, it resets when I turn it on in the morning.

 

I really don't want to have to RMA the motherboard as it's my work machine. If there's anything else I can try please let me know!

 

My RAM is sold as supported for Trx40 boards (check the link), but the exact Module P/N doesn't come up on the memory support list for the Mobo. Could this be tripping the CMOS reset? I've not had any other issues from the RAM, and once I have the XMP profile active my zen timings are looking good.

 

I have plugged in both 8-pin atx 12 volt power connections as my equipment is pretty power hungry, maybe I should only have one plugged in?

 

Would it matter which CPU Fan connection I used for the liquid cooling system?

 

I'm honestly struggling to figure out what it could be now. Any help would be hugely appreciated!

[jaslion]

It does sound like either a bios crash happens and it resets or that something is indeed broken on the board.

[AnUnQuietMind]

Despite this most likely not being the cause because its a new motherboard. its also the easiest to fix "If this is the problem" is the MOBO Nickle sized battery dead? that saves the bios settings. if you got a dud battery its like 4$ to replace.

[jaslion]

1 minute ago, AnUnQuietMind said:

Despite this most likely not being the cause because its a new motherboard. its also the easiest to fix "If this is the problem" is the MOBO Nickle sized battery dead? that saves the bios settings. if you got a dud battery its like 4$ to replace.

Read the post they replaced it already.

[mobomofo]

Yeah I've already replaced the battery, could it be the RAM I'm using as it's not on the Mobos supported ram list? (at least not the exact part number)

[Lucas Tanure]

I have the same issue. The computer crash at the BIOS init and resets the BIOS config.

[Lucas Tanure]

My PC:

 

AMD Ryzen Threadripper 3970X 32-Core Processor

VENGEANCE® LPX 64GB (4 x 16GB) DDR4 DRAM 3200MHz C16 Memory

Sapphire Radeon RX 6700 XT Nitro Gaming OC 12GB GDDR6 PCI-Express Graphics Card

Samsung SSD 980 PRO 1TB

 

BIOS FC 11/23/2021
 

[Beerzerker]

As was suggested before, check and replace the CMOS battery and make sure it's above 2.9v's - If it's close to 2.9, go ahead and replace it since you'll probrably be doing that soon enough anyway.
Check the connections in the battery holder and make sure they are clean and that the tension spring in the holder is applying enough pressure so the battery is Nice-N-Snug in it's holder.
If it's really loose (Kinda rattling around/Really easy to spin around) that also could be the problem, all you do is simply pull up and out on the spring in the bottom of the battery holder a little to tighten up it's fit into the holder.
Again snug, not tight is the fit to go for here.