Question Computer dont find graphics card sometimes when i boot computer.

[Huehuel]

Hello guys im running two 2080ti watercooled graphics card. They usally works fine, But sometimes when i boot up my computer, The slibridge wont glow up, and my grahpics card are non existance, aswell the cards dousent show in my system anymore, and i get the 59 hz on monitor again... Like is there something wrong with my cards? Usally when i do a reboot again my sli bridge will glow up and my cards will work again, but im scared that something is broken, it is cards for 3200 dollar, i want it to be flawless, and not having this problem for this kind of money, any help is much appreciate.

 

[rgd1101]

full system spec? include make and model of the psu

 

[Huehuel]

GTX 2080ti asus
GTX 2080ti asus
i7 9700k 3.60 ghz
G.Skill 16GB (2x8GB) DDR4 3200MHz CL14 Trident Z Royal RGB


ramasus rog maximus formula xi
Asus thor 1200 watt THOR
2.5k monitor 165 hz