Portal 2 black screen after loading
I just got Portal 2 a few days ago and am really excited to play it. Unfortunately, I have encountered an issue that many people seem to have, but few have solved. After loading Portal 2, my computer shows just a black screen, but I can hear the noises. One solution to the issue that I found was to enable the developer console and type this in: "mat_postprocess_enable 0" This worked to some degree, but the image is flickery and laggy. I noticed in the developer console, it says in red lettering, "***** Trying to get a pixel shader that failed loading!" I have done some research on this issue, but come up blank. I would like to tackle the problem of this error specifically, and avoid simply getting a new graphics card if possible. Thanks!