BradLouKy wrote
@IrvSp Wonder if it some kind of power surge or drop...Might try putting the computer and router in different outlets.
Shot in the dark. That is a weird one!
@BradLouKy
I'd be surprised at that being the cause?
What are the odds of it happening just when you are doing a BIOS update.
Things I'd try, use Wireless, the Tower has a Wi-Fi 7 Intel M.2 in it... then do a BIOS Update (disable the Killer Ethernet card or disconnect the Ethernet cable0) and try the BIOS install over itself (d/l for Dell's site) via Windows. If the Deco doesn't boot, disable the BE200 adapter and enable the Killeer card or put he cable back in, and do the same test.
Of course, if it is a power surge/drop, I'd not see it here as all our PC's are on UPS's, as wella s the mail Deco and modem.
I assume your Ethernet cable doesn't go directly to your Deco from the PC? Possible to a Wall outlet and at the Deco from a wall outlet?
Could one of those cables have a problem and short out during a BIOS install done under windows that turns off and on the card? Maybe even producing a short? That woud be also seen doing the BIOS install in Windows and when doing it that way you DO see the Progress in the Install of the BIOS, and might be able to pinpoint which 'part' of the BIOS install causes the reboot (if it happens).
I always DO the manual D/L of any Dell Update and run it via Windows. Never trusted MS to do it right and alway turn off in BIOS the Capsule Update...MS will and can install updates you don't want, ESPECIALLY for Nvidia cards.
I suggest you look here ===> https://www.nvidia.com/en-us/geforce/forums/game-ready-drivers/13/ amd see the mess that latest Nvidia drivers have caused RTX 40 and 50 series cards. Your Tower probably has an RTX4060 in it and has an older Nvidia Driver before the V850 series driver.
Again, this problem could be a Deco or Tower problem. I am leaning to it NOT being a Deco problem. All I can say, we've never seen this.
I really suggest posting about this in the Dell Tower forum. Maybe someone else has the same situation (doubt it) or has the same Deco and might have a suggestion. Dell Towers are about 6 months new... better chance on the Dell forum finding someone with the same h/w there.
Otherqwise I suggest contacting Support at TP-Link. Who knows, maybe they had another report of this?
Again, when we had the BE65 which is the same model Deco, 2 Dell PC, an XPS8940 and the tower had many BIOS updated (none used Ethernet though, only wireless) and never saw that problem.
By the way, we have 1Gbps Internet service. Both PC's had the Intel BE200 M.2 adapaters in use. Both get over 900bps down, approaching 940bps which is the max. theoretically possible via wireless.