Question Bring it back from storage

[Missileranger]

Folks,
Back in 2014 I built a system in a Antec Dark Force 85 case. Had it up running 3 screens on SLI with Windows 8.1. In 2015 I got offered a job that meant moving and it went in storage until this year.
I tried firing it up with a ethernet connection so it could update. Nothing worked. Bought Windows 11 to update and it won't load. It keeps telling me the system doesn't meet minimum needs.
CPU: AMD FX-6300 Vishera 6 core 3.5 GHz Socket AM3+ 95 W
Motherboard: Asus M5A99FX Pro R2.0 AM3+ AMD 990FX + SB950 SATA 6Gb/s USB 3.0 TX with UEFI Bios
RAM: 16 GB (2x8GB) DDR3 2400 (PC3 19200)
PS: Kingwin Mack 1 ABT-1000 1000W ATX/BTX SLI certified
Graphics: 2 GeoForce GTX550 Ti with SLI bridge
A 128 GB SATA III internal SSD bootdisk
and 3 1 TB SATA HDD in Raid

I'm at a loss. Seems like I can't update any BIOS because I have no running OS.
I don't want to lose the system, but I'm guessing my only way out is to buy a new MB and start loading W11 from there.
Any ideas?
Thanks!

 

[USAFRet]

That system is in no way Win 11 capable.

Win 10 yes....11, no.

For Win 11, you'd need a whole new system.
motherboard, CPU, RAM, etc, etc.

 

[Unolocogringo]

Your system is not 11 capable.
Put 10 on it and be happy it is still useful.
Also very few games support sli now days.
First thing I would do is replace the CMOS battery .
Boot to bios and set Date/time and load bios defaults.
Now reboot with your windows 10 USB installed and install a fresh copy with only boot drive installed.
Recovering your raid is not likely .