PC booting up went from 15 seconds to 10+ minutes. After I log in, all my monitors go black and only the mouse cursor is visible. Displays come back by restarting the Windows explorer but PC continues to run extremely slowly, basically unusable

***UPDATE 9/7/26: It was the SSD failing. I backed up the failing SSD and then cloned it to my new one. Then went into bios and changed the priority boot to the new SSD. My PC is back to working normally. Just wanted to update anyone who runs into this issue in the future. Thank you to everyone who helped here in the comments***

This issue started happening 2 days ago. I turned on my PC and it just loads and loads for 10-15 minutes before it finally reaches the sign in screen. The display is working fine there.

When I sign in, all 3 of the displays go completely black, only the mouse cursor remains and it's still usable. I've looked at guides that told me to ctrl+shift+esc to restart the windows explorer, which does get the display to return to normal but not much else.

Everything runs slow. I click on something and it takes a minute or two to register. If I open a browser nothing loads at all, just infinitely buffers.

I've had Chatgpt guide me (I'm desperate and not the most tech savvy person) to run some diagnostics and repairs but nothing helps. I can't find anything much online that helps.

Any idea on what's going on and how to fix it?