Hello Guys, I have an old 2014 Alienware 17 R1 (I know, pretty obsolete but it is what I have), with an error code 43 on the Graphics Card, and I also have two "unknown" devices listed under device manager area.

I have tried a lot of things:

I reseated and cleaned every component related to the graphics card to make sure this was not a hardware failure

I uninstalled the device and let windows do the reinstallation, but it always goes to the 43 error

I forced disabled it, and reinstalled it again, reinstalled the latest graphic drivers (there was a point where my computer froze and ran into a blue screen a few times), ran the Dell Support Assist (which shows "no issues" because it doesn't run the tests as the GeForce is just "not there"so it ran the tests on the intel graphics card.

The unknown devices are: root complex PCI express and ACPI Compliant System, because they lack the drivers, I have updated the drivers for the computer in every possible way, straight from the website, some 3rd party driver installer and manually and somehow the error still doesnt go away. I have tried some other things I don't remember at the moment.

The Bios does recognize the Graphics card. and the FN+F5 doesn't work at all (change graphics card hotkey). 

What I would like to know before giving up is that if this problem can be caused by a defective graphics card.

Any help would be appreciated you can ask me if I have performed some other steps and I'm sure I'll remember if I read them.

Greg