Really strange startup issue

[KWelz]

I am putting this in this section because I am 99% sure it is Mobo related.  

 

Most times when I do a cold boot on my system it will go strait into the Bios.  No errors, no problems.  I just never get a windows boot screen.  I have to restart the system multiple times to finally get into windows.  Sometimes going as far as to turn the PSU completely off.  

 

This never happens on a simple restart.

 

Relevant parts are as follows. 

 

Rampage V Edition 10

6850K

Samsung 960 Evo NVME boot drive. 

Asus Thunderbolt 3 card.   

 

 System is overclocked and stable but I have tried resetting to factory defaults and the issue still persists.  

[ARikozuM]

Have you tried to switch to SATA disks?

Have you tried a different PSU?

Also, please post full specs.

[KWelz]

46 minutes ago, ARikozuM said:

Have you tried to switch to SATA disks?

Have you tried a different PSU?

Also, please post full specs.

 

Have not tried to boot from a SATA disk. 

Tried a different PSU

 

 

Rampage V Edition 10

6850K

64Gb G.Skill TridentZ 3200 Quad channel memory running at 2600.  

Samsung 960 Evo NVME boot drive. 

4 x 500Gb 850 Evos in Raid.

2 x 1TB 850 Evos in Raid.  

Asus Thunderbolt 3 card.   

EVGA 1080TI FTW3

EVGA G2 1000P Power Supply.  

 

Currently running Air cooling on the GPU and a Kraken X62 on the CPU until I get this figured out and feel comfortable hooking my Loop back up to it. 

[Silentsoul]

Generally the mobo will default to the UEFI if it cannot find a "suitable" boot drive. 

 

Check and make sure your UEFI is up to date. 

 

If you were or were not using secure boot make sure that didn't get changed. 

 

If you have a usb stick with windows on it, boot to that and run the repair to make sure your boot loader isn't corrupt. 

 

[heimdali]

It makes me think that the CMOS battery might have insufficient voltage/power.  I know it sounds stupid, but the battery is easy to replace, so why not try that.