Graphics Card Does Not Show Up In Device Manager (Re: Installing AMD Video Drivers - Windows 8.1 (Step-By-Step Tutorial)

Question

This tutorial is a step-by-step tutorial on how to "fix" issues of a new graphics card not appearing in Windows 8.1 Pro, or not appearing (as a device) in Device Manager, or it's not being detected by Windows 8.1.
This is the "second part" of a Step-by-Step Tutorial on how to install AMD Radeon graphics card drivers in Windows 8.1 Pro.
GRAPHICS CARD IS NOT DETECTED AND DOES NOT SHOW UP IN WINDOWS 8.1 DEVICE MANAGER
This problem can appear if the video card is not installed properly in the PCI slot and as a result the card is not detected in device manager. Check the physical connections again, reinsert the card properly in the PCI slot, check the connections (including the power cables going to the video card, and ensure that the fan on the graphics card is spinning and the card does have power and is properly seated/inserted) and then install the drivers from the manufacturer’s website.
If the video card is in fact installed properly, but the problem of the video card not being discovered/found by the operating system persists, then try these following methods below to check if this solves the problem.
Method 1:
First, I would suggest you to run the following Microsoft Fixit to get the problem automatically detected and fixed. This Microsoft "fixit" App checks if the device is currently disabled or turned off or the driver is not installed.
Hardware devices are not working or are not detected in Windows.
http://support.microsoft.com/mats/hardware_device_problems/en-us
Method 2:
Sometimes, some devices in device manager are hidden due to corrupt or missing drivers.
Follow the steps below to show hidden devices in the device manager and troubleshoot accordingly.
Press the Windows key + X
Select Command Prompt (Admin)
Type set devmgr_show_nonpresent_devices=1 and hit enter
Type Start DEVMGMT.MSC and hit enter.
Once in Device Manager hit the View menu and select show hidden devices.
From here, remove each instance of the AMD or Nvidia card you see as well as each unknown device. Exit Device Manager and reinstall the latest drivers you can find for your graphics card.
After you install the drivers, reboot and see if you get any different results.
If the above solved your problems and the Graphics Card is now working and is now being properly detected/displayed in Windows Device Manager:
If your graphics card is now being detected by Windows 8.1 in Device Manager, but has a "yellow exclamation" mark (or video drivers are not found or not properly installed or the device is disabled) then install the latest graphics card drivers and proceed with this Step-by-Step Tutorial on how to install AMD Radeon graphics card drivers in Windows 8.1 Pro.
Method 3:
If methods suggested above does not help, I would recommend you to contact Apple/AMD/NVIDIA to get the latest chipset, BIOS, graphics card drivers installed properly.

Answer 1

This tutorial is a step-by-step tutorial on how to "fix" issues of a new graphics card not appearing in Windows 8.1 Pro, or not appearing (as a device) in Device Manager, or it's not being detected by Windows 8.1.
This is the "second part" of a Step-by-Step Tutorial on how to install AMD Radeon graphics card drivers in Windows 8.1 Pro.
GRAPHICS CARD IS NOT DETECTED AND DOES NOT SHOW UP IN WINDOWS 8.1 DEVICE MANAGER
This problem can appear if the video card is not installed properly in the PCI slot and as a result the card is not detected in device manager. Check the physical connections again, reinsert the card properly in the PCI slot, check the connections (including the power cables going to the video card, and ensure that the fan on the graphics card is spinning and the card does have power and is properly seated/inserted) and then install the drivers from the manufacturer’s website.
If the video card is in fact installed properly, but the problem of the video card not being discovered/found by the operating system persists, then try these following methods below to check if this solves the problem.
Method 1:
First, I would suggest you to run the following Microsoft Fixit to get the problem automatically detected and fixed. This Microsoft "fixit" App checks if the device is currently disabled or turned off or the driver is not installed.
Hardware devices are not working or are not detected in Windows.
http://support.microsoft.com/mats/hardware_device_problems/en-us
Method 2:
Sometimes, some devices in device manager are hidden due to corrupt or missing drivers.
Follow the steps below to show hidden devices in the device manager and troubleshoot accordingly.
Press the Windows key + X
Select Command Prompt (Admin)
Type set devmgr_show_nonpresent_devices=1 and hit enter
Type Start DEVMGMT.MSC and hit enter.
Once in Device Manager hit the View menu and select show hidden devices.
From here, remove each instance of the AMD or Nvidia card you see as well as each unknown device. Exit Device Manager and reinstall the latest drivers you can find for your graphics card.
After you install the drivers, reboot and see if you get any different results.
If the above solved your problems and the Graphics Card is now working and is now being properly detected/displayed in Windows Device Manager:
If your graphics card is now being detected by Windows 8.1 in Device Manager, but has a "yellow exclamation" mark (or video drivers are not found or not properly installed or the device is disabled) then install the latest graphics card drivers and proceed with this Step-by-Step Tutorial on how to install AMD Radeon graphics card drivers in Windows 8.1 Pro.
Method 3:
If methods suggested above does not help, I would recommend you to contact Apple/AMD/NVIDIA to get the latest chipset, BIOS, graphics card drivers installed properly.