Black Screen upon launching the client:
Users have reported experiencing a black screen upon launching the client. Details we are looking for specific to this issue are the following:
Do you hear any game audio? yep
Are you able to interact with the Main Menu blindly and load a save to get past the black screen? no
Is this current patch the first time you've encountered this issue? (currently 1.2) this is patch 4. something (latest I think)
If you've encountered this issue on a previous patch version(s) and this is still occurring, which patch version(s) have you had this issue occur on? game was working fine until a couple of days ago. not sure re: patch, happens automatically.
Is your OS (Windows, Mac, Linux) up to date? Win 10, yes
Are your graphics drivers up to date? yes Geforce latest
I should mention I got through to the Main Menu once this evening after Verifying Game integrity. But then later after quitting and restarting the problem recurred. Retried Verifying => same issue. Obsidian and Versus splash screens, glove cursor, music starts, brief pause, music starts again, then game minimises to non-interactable desktop, have to alt-tab and go to task manager to force close.
UPDATE
I happened upon a solution after some experimenting. I forced it to use the integrated graphics and it actually worked, leading me to conclude that it was probably a GPU driver issue, so I decided to rollback the driver and the game now works .
Device manager > Display adapters > Select Adapter > Drivers > Rollback driver.
I hope this helps somebody!