Windows 10 May 2020 update is now available

I hope this helps. It's been a long time since I've done it, so bare with me. At one point in time I lost my curser and touch pad on my laptop. It had to do with a registry error.

I'm assuming you're using a laptop. You'll have to have to first hit your power button and hold it down until it powers off.

Then as you hit (reboot) the power button again, press F12 as soon as you see the screen that shows right before the Windows screen

You should see the black boot menu screen then. Then use the up/down arrows to select Diagnostics. If I remember correctly, this will run a series of tests to check for errors. This might help solve the problem, and you get the power off and restart button. If that's not the problem, then it more than likely happened when you upgraded to Version 2004. There are still apparently kinks in the new version even if it says that Windows 10, Version 2004 is ready to download. That is why I'm waiting for now especially since I got the message that my laptop wasn't quite ready to receive the upgrade. It also said there was nothing I needed to do. When Microsoft gets all these kinks worked out including working with manufacturers to get the drivers we need, then I will take the download when it's finally offered to me.