It is no longer visible in Device Manager(including show hidden), BIOS or GeForce experience etc. Gone from everywhere.
I have tried what seems like every possible solution, I have disabled and enabled internal graphics, flashed BIOS, tried to instal a variety of drivers both current and previous versions, I have even performed a clean instal of windows 10 and still nothing! I even tried taking the physical card out and cleaning and rehousing, but to no avail.
Any help with this would be greatly appreciated.
My system is an R4 bought in 2013, with a GTX 675m card running windows 10