Just built a new PC.
Each time I start Black Mesa, it comes up in 1024 x 768 (3:4 ratio), and no AA.
Each time I have to switch to 16:10, 1920 x 1200, 4xAA (etc).
My system is easily powerful enough to handle these settings.
But when I quit, it doesn’t remember anything, and I have to do it all again next time I start.
NB: Doesn’t happen for other Steam/Source games (tested Half Life 2 & Portal 2)
MoBo : ASUS P8 Z77-V LX
CPU : i5 3570 @3.4GHz
SDD : Intel 520 Series 240GB (Steam on this)
HDD : Western Digital Caviar Green 2TB 64MB Cache
GPU : ASUS GeForce GTX 670 DirectCU II
OS : Windows 7 Home Premium 64-bit
PSU : Seasonic X-650
Audio : Roland Quad Capture
Steam freshly installed & activated,
SteamApps folder copied across