I have had my Dell XPS 8900 for several years, during which I was able to play all of my Steam games just fine. Recently, I have found that nearly all of my Steam games crash/fail to launch, and the “running” status on Steam simply reverts back to “Play.” I’ve tried verifying files integrity, reinstalling each game, reinstalling Steam, and I even reset my pc to factory default. After downloading Steam on the fresh start, it still would not launch the Steam games. Any suggestions?
Really, and I'm gonna push the envelope here and post it as an answer, it sounds a bug not with steam, but the game crashing on boot.
Steam tries to launch the game (shows running), the game crashes with no message, but steam detects the game is no longer running so it goes back to the 'Play' button.
So now, why? I don't know with the information given here and it could be loads of things.
Can you run any game that is not booted via steam (Like with the epic store launcher)? Are all games you have/tried linked in some way (like if they are all unity based or something)
If you can't, I'm gonna guess a firewall or antivirus or even a virus is overbearing and basically stops anything using processes that could apply to games as soon as they appear. And since the crash is not a crash that is expected by the games, no message is shown.