So I installed HL2 yesterday and tried starting it up by clicking the shortcut icon, and so the menu GUI comes up like it's supposed to and click the play button. It starts loading steam, but then a window comes up that says something about a fatal error and a module platform, then steam crashes and all windows are exited. I tried doing it again today, no windows show up and my screen goes black for a second or two, then goes back to my desktop, but nothing else happens. I do not know what to do, I tired searching the internet for fifteen minutes but I found nothing
