mrc User 
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Many of you had this issue after using Alt+Tab shortcut and suddenly unable to get back into the game (blank/black screen) but still able to hear sounds. So basically this is a graphics card related issue and you just need to press Ctrl+Shift+Win+B. Once you've done this, you'll hear a beep and your screen will flash for a second. And that's it. You can go back to your game and play normally. Also, this works for any game. This works on Windows 10 and probably 11, not sure if previous versions have this.
https://prnt.sc/CN48kYi3okp2 edited 1×, last 17.02.23 12:26:21 am
CS2D 
Solution for Alt+Tab bug
1 