Windows 10: PC screen freezing when closing a game, or ALT+TAB during a game...PC dont react anymore,...

Hello, I´m here because i have a major problem that prevents me from using my pc...For some days i mounted a complete new gaming pc for myself, Its my second build, the first one works well since i build it for three years and i upgraded myself some elements so i´m not an expert but i´m not a beginner too. For this new setup I build it carefully to dont make common mistakes. But something is not working well at the moment i clearly see it...The problem is since the first or second day i used my new build i have a really strange bug i didnt had so far...and its impossible for myself to know whe

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Weird alt-tab out of fullscreen games.

Hi Simon,

The multitasking capability of a game depends on the total memory of your computer. If you have large amounts of RAM on your computer, it can multitask heavy programs easily like high-end games. To ensure that we can provide the appropriate resolution
for your concerns with the alt-tab function, we’d like to ask you a few questions:

• What were the recent changes made on your computer before you experienced this issue?
• When did the issue start?

• Have you pressed the alt-tab key during you play Rainbow Six Siege? Or it just happen without pressing it?
  
• Does the automatic ALT-TAB behavior happens on other games?
• Do you have any other programs running on your computer while playing?
• What is the anti-virus program you're using?

• What is your device or system specifications? To know, follow these steps:
  1. Press Windows + S and type
     About your PC.
  2. Send us the information listed under Device specifications.
  
  

Moving forward, if you're multitasking while playing, we recommend that you play this game only without doing other tasks. Pressing ALT-TAB or performing a multitasking interferes with the performance of your video card, especially if you're running a heavy
game like Rainbow Six Siege. It will generate screen viewing issues like intermittently switching your game screen between your desktop environment.

For now, restart your game and do not press ALT+TAB while playing. This will allow your video card to dedicate its graphics performance on the game only instead of your desktop environment.

If you would like me to provide additional advice, simply respond to this thread. I will get notified and I’ll reply to you as soon as I can.

 

Windows 11 'Freeze' When Alt-Tabbing From Game

Are you guys only experiencing this problem with VALORANT? I'm also on win11 and I'm experiencing all the problems you guys have listed. The only other problem for me is that it's also been happening with my steam games? I literally can't play anything besides League of Legends. What happens is that when I launch steam games, I don't even alt+tab, the game just decides to freeze whether that be on launch or during the game. I've also experienced some issues where sometimes I'll just be on the internet and my monitors will go black and I'm forced to hard reset my PC.

 

Windows 11 'Freeze' When Alt-Tabbing From Game

I have exactly the same issue in Valorant and in others games sometimes, ALT Tab frequently freeze my PC ( cursor freeze or blackscreen ), can hear sound of game, of friend in discord too and i only can restart it with power button... i tryed to reinstall windows 11 with a PC reset and that not resolve the problem

edit : Solved the problem by uninstall w11 and install w10 clear install with USB device !!!