You're welcome. It's a shame that it didn't make any difference for you.
I wonder how many others are experiencing the same issue.
Edit: This is what MaG says at the beginning of her walkthrough:
At start of the game; see the settings frame. Here you can select display and sound settings. The display has choice for display device, colors, antialiasing and the aspect ratio. Sound device can be chosen at sound settings.
The main menu has continue, start, load, options, credits and exit. At bottom left, choice of language can be selected: English, Italiano and Russian.
Options have 3D or 2D inventory selection; subtitles and shadows for video and volumes for main, music, environment and voices for Audio. The keyboard controls are shown.
Under options, I recommend that you use Detective (3D) to get clues in the game as well as other features.In 2D; the inventory is at top of the screen. Right click at item to see the eye icon. Click again to get a description of that item.
So it's possible at least to see what you have in your inventory.
Did you try adjusting any of the other display settings?