So, I downloaded PVK II today, and it ran great. But since I minimize a lot due to multitasking, I figured it would be alot easier to do the "-noborder -window" in launch options, as I've done with all my other Source-related games. Since I did that, whenever press Play Game on steam, it comes up with the Preparing to launch, then it's like it opens a window for 1 sec, and then it just disappears. No errors, no nothing. I've tried re-installing, defragging cache, checking files .. Nothing helps.
What can I do about this? I've also tried restarting steam serveral times after re-downloading/installing the game.
Solution to this current problem: Add -autoconfig to the Launch Options.
( search tips: Source HL2 MOD PVKII crash on start-up whitescreen )