Laptop is slow and turns to black screen

[Kdh3]

The notebook was working fine the night before while doing some homework.

I did notice that it was a bit slow but didn't pay much attention to it. When I got to class the next day, I turned it on like normal. Once I signed in, the screen turned black. I could only see the cursor. I restarted it, and it did the same thing, but I waited a bit longer. Everything on the screen loaded. I thought it needed an update. I went to the start and I tried clicking the power button and no options appeared. I clicked multiple times until it finally appeared. I clicked on the usual update and restart. It took a while for it to restart but it seemed, to me, that it didn't update properly.  Usually updates take some time and it shows on the screen how much it has done, but it didn't this time.

Once it loaded it, I wanted to click on chrome, it didn't launch immediately. Well, it didn't launch at all. All of the programs take a long time to launch or they do not at all. If the program does not respond and takes a long time, the screen goes black. Only the mouse cursor shows. I tried to go to the start menu but it takes a while to load. Once it appeared, I tried to go to the settings, but it does not want to open it. I also tried to see if I could delete some things but the files never loaded. Basically, I cannot do anything with it. I've had this laptop since 2016 and it was working perfectly fine. It has windows 10 installed. Hopefully this all makes some sense. 

[Lil_Boy_Blue]

Hi

IF/WHEN you gain access, please make BackUps and Recovery Media immediately.

First please try this...
https://support.hp.com/us-en/document/c01684768/

This works for most HP Laptops (and some Desktops)...

To perform a power reset on a laptop with a sealed or non-removable battery:
Turn off the computer.
Remove the computer from any port replicator or docking station.
Disconnect all external connected peripheral devices such as USB storage devices, external displays, and printers.
Unplug the AC adapter from the computer.
For most laptops, press and hold the Power button for 15 seconds to reset.

To perform a power reset on a laptop with a sealed or non-removable battery:
Turn off the computer.
Remove the computer from any port replicator or docking station.
Disconnect all external connected peripheral devices such as USB storage devices, external displays, and printers.
Unplug the AC adapter from the computer.
For most laptops, press and hold the Power button for 15 seconds to reset.