I have an Alienware Area 51M gaming laptop. The discrete RTX 2080 isn't showing up in device manager; well it shows up as disconnected. Right now the laptop is usable via the built-in Intel UHD 630, but it can't really game or anything. And Geforce Experience won't install the latest driver for the RTX card, probably because it doesn't detect the card.
This first started happening after a reboot. I couldn't figure out why my game Galactic Civilization 3 was running with herky-jerky visuals. Well now I know...
I do have both AC power supplies plugged in, so the RTX shouldn't be getting disabled by lack of power.
I did update the BIOS with the December 3rd update, thinking "what the hell". The update applied successfully, but that hasn't revealed the RTX yet. The BIOS/setup screens offer no way to enable or disable the GPU at the hardware level and I'm not sure if I should try "uninstall/reinstall" in Windows Device Manager.
The machine is still under warranty, so I'm going to phone this one in. I suspect the cause to be the power supply, motherboard, or the GPU itself. I'm also considering reseating the GPU, but I'll wait for Dell to tell me to do that.
Any ideas?