New Aurora R11 boot issues

hello,

i have an Aurora R11 bought directly from Dell and i have to boot it twice after longer downtimes (at least several hours, usually over night).

It appears it doesn't pass the POST as no connected device turns on (Monitors / Mouse / Keyboard / Headset, easy to tell cause they all have an RGB lights, Monitors remain in standby mode)

It takes arround 2-3 seconds after i press the power button before the machine turns of again and doesn't reboot automaticly. So far, it boots properly the after the 2nd time and runs after that without issues.

While this is bit annyoing for a 2400€ machine i don't see a reason to freak out about it. It's minor issue and if it doesn't get worse i don't see any reason to talk about refund or waranty.

But i still wan't to get rid of it. 

So far i didn't run any OC setup, all settings in Bios and Fusion are factory defaults. The only thing i tried lately is turning of some Boot options (disabled USB, NIC Boot). Though it didn't help.

Did run a full scan in Boot Menu (F12 at startup), full scan will dell support assist software, no issues detected.

could this problem "hurt" the machine over time or get worse (shortened lifespan, more reboots required)?

Any Ideas what could be the cause, or any suggestions?

Should i try the bios update from 1.01 to 1.03?

P.s. R11 with GTX 2080 Super (without watercooling), I7-10700KF, and the 1000W Case/PU. 2 Monitors connected (60Hz, 1080p, 1x at HDMI, 1 at DP with DP/HDMI adapter)

I tweaked the OS (win10 home), and not just a little bit. Things like forcefully disabled Windows updates, Defender and Firewalls, stuff like that. But i don't see this as the cause. In the worst case i try to rollback the system. But i doubt it will help.