Weird Graphics Bug, Dots In Windowed Mode

[Statmuffin]

So basically, when I start up a game in fullscreen mode everything is fine and normal, however a few months back I noticed when I tried to play in windowed mode these weird dots covered the entire sceen. I just brushed it off and decided I wouldn't play it in windowed. But the problem is I've noticed this with multiple games I own. Black dots cover the entire screen in an orderly fashion (Even over the "Press Alt + Tab" tooltip). It does it with most games I own however a select few are exceptions.It has started to become a problem for multitasking on the PC. Has anyone experienced this before? If so please help! Thanks.

Edit: They don't cover the entire screen. Sorry, bit of a misdirection. They cover the entire of the windowed box, not the entirety of the screen.

[Bad 💀 Motha]

Once game is in Windowed Mode; try Winkey+L
Then click your account again. See the that clears the visual issue.
If other games do this too; it could be a GPU issue, or Driver issue.

[Statmuffin]

No that didn't do the job. But thanks for responding! :) I'll look at the other issues you mentioned! I just can't see why they would work in fullscreen but not in windowed.

[Bad 💀 Motha]

Check CPU/GPU temps too.
Like running HWmonitor from CPUID.com
Let it run in background and see what your max temps are in there after running a game.

[Statmuffin]

38 degrees. Sorry for the late reply!

[Bad 💀 Motha]

There are labels at top of that app that say "Value | Min | Max"
Plus you will have a separate temp for your CPU processor and your GPU graphics card model.

What do both of these say for Max?
It will help to run a game for at least a few mins actively on-screen to allow some time for the components to get warm/hot. If you minimize a game, then the temps aren't accurate for that game because the game is actually suspended, not active.

[Statmuffin]

CPU max is 87.1 degrees and Graphics card max is 58.5.

[Shulp]

+1