The Metro Camera in your Windows 8.1 'Start' works but displays a blank screen. When you take a snap of yourself it saves it to your Cameraroll folder without any issue.
Image of a blank Metro camera
You have done everything you know to solve the problem without resolving it. This problem is not a hardware related. The fact that your camera can take and save your images clearly to a folder without the blank screen is a proof there is no problem with the camera parts.
If you are having this trouble with the Metro camera in Windows 8.1 and want to find solution to it immediately, without wasting time to troubleshoot the cause of the problem, this instruction is meant for you. To do that follow the step-by-step information below.
Image displaying Windows + R key
STEP 1: Press Windows + R key to open 'Run' dialog.
Red arrow pointing to dxdiag in Run dialog
STEP 2: Type or copy and paste dxdiag into the 'Run' dialog and click 'OK' to continue.
Image showing red arrow pointing to location of system model at DirectX Diagnostic Tool
STEP 3: Copy your system model information. If your 'DirectX Diagnostic Tool' didn't display your system model look for label at the back of your computer for it.
An example of a VGA driver from system maker official website
STEP 4: Look for the latest video graphic driver(VGA) for your system model from your the official system maker website, download it and install it.
Image of a Windows restarting
STEP 5: Restart your system for changes to take effect.
Image of a working Windows 8.1 Metro camera
STEP 6: Click on your Metro camera and it will show without the blank screen.