Wifi show up once, and then dissappear, also, ethernet conection is not working

Nop, it does not work, but now I back to getting wifi, it feels like it works after an hour or more my device is on, I won’t to turn it off, but i want to know If now the wifi is working, are they some command to know why? I mean, now it’s working, but why and how can I keeping it working?

Something new in results for sudo dmesg | grep iwl

I guess this

[    6.386687] iwlwifi 0000:01:00.0: Unable to change power state from D3cold to D0, device inaccessible
[    6.446730] iwlwifi 0000:01:00.0: Unable to change power state from D3cold to D0, device inaccessible
[    6.446894] iwlwifi 0000:01:00.0: HW_REV=0xFFFFFFFF, PCI issues?
[    6.446910] iwlwifi 0000:01:00.0: probe with driver iwlwifi failed with error -5

I didn’t see it before
also, My laptop cannot be power on all night, so, It doesn’t working anymore and again I sharing wifi via bluetooth

Can you remove the wifi card and reinsert it? May have to remove the bottom of the laptop and remove one screw that holds the card in, I would not remove the antenna wires as those connectors can be delicate

I did it, I mean turn off computer, removed it, turn on, it works, turn off again So I can put all the screws in place, turn it on again and does not work anymore

I don’t know how it can be that picky about working and there were errors in the log about the display adapter. I think there is likely a setting in BIOS about PCI(e) power management

Did You know which option on the BIOS can help? I don’t know, I’ve already try all your answers