Black bar glitching

Pineapplechnks  Please post a screenshot of the issue.  And let me know whether this happens in windowed mode.  Go into Documents > Electronic Arts > The Sims 4, open Options.ini, search for fullscreen , and set it to 0 (zero).

Please also please provide a dxdiag.  Click Windows key-R, enter dxdiag in the run box, wait for the scan to finish, click "Save all information," and save the file to your desktop.  From there, you can attach it to a reply using the paper clip (Attachment) icon included with the other formatting buttons.

Okay, I have to this in parts because it won't let me screenshot I have to take a picture with my phone and when I screenshot from my computer it takes away the problem and then puts it back but here. Also, I'm using fullscreen.

Okay i forgot to say I didn't have this problem before I downloaded cc skin details ever since the problem stuck and didn't leave when I did all the steps 

Pineapplechnks  What resolution are you using in Sims 4 itself?  It's listed with the other graphics options, near the top.  If you're not already, switch to 1920x1080 and restart the game.

If that doesn't help, or you're already using 1920x1080, switch to windowed mode, quit, reload, switch back to fullscreen, and quit and reload again.

Switching to window mode fixed the problem but I dont know why thanks

No, it didn't when I'm using window mode it runs at 1920x1032, and it is fine as soon as I run it in fullscreen mode the glitch comes back even with 1920x1080 which I don't understand why before the update I was fine with it also works with window fullscreen 

Pineapplechnks  I'm not sure why either, although if you're happy with windowed fullscreen, you don't need to do anything else.  It should look the same as fullscreen mode and run almost as well.

The driver for your graphics chip is a bit old, so if you really want fullscreen to work, you could try installing the newest driver Microsoft offers for the chip.  Just pick the first download here:

https://www.catalog.update.microsoft.com/Search.aspx?q=uhd%20graphics%20605

Here's how to install a .cab file; the tutorial is for Windows 10, but some of the options should work in Windows 11 as well:

https://www.tenforums.com/tutorials/66346-install-cab-file-windows-10-a.html

To be clear, I'm not saying you need to do this, only that you can try it if you want.  And you may get a notification that the driver is incompatible, not because it is, but because HP software sometimes blocks the installation of drivers not provided by HP.  If you see that, just stick with the HP driver you have.

Okay thanks