So... I came here hoping someone expert could basically detect what the problem is by taking a look at the screenshots below that document it.
Here's how the glitch looks like:
http://i.imgur.com/GVGcN.jpg, http://i.imgur.com/J6GdW.jpg, http://i.imgur.com/L9NHF.jpg.
My specs:
Windows edition: Windows 8 Release Preview Build 8400
Processor: Intel? Core?2 Duo CPU E7300 @ 2.66GHz 2.66 GHz
Installed memory (RAM): 3.00 GB
System type: 32-bit Operating System
Display adapter: ATI Radeon HD 2400 PRO (Engineering Sample - WDDM v1.1)
Driver Version (Display Adapter): 8.97.10.0
Maybe the problem is that Windows 8 Release Preview is not the final version, so something doesn't work right as it could in the final one. Could be? I hope, because I'd like to switch to Windows 8 when it comes out, and fear that old games like Half-Life 2 or old graphics cards like mine could get in trouble.
Again, if someone can actually understand what the problem is by looking at the screens and specs, I'd be VERY greatful.
Thλnk you.