Windows 10: My cursor is stuck in the left hand corner and is flashing and won’t move even if I turn...

Please help

:)

 

Computer won't reboot - only have flashing cursor in upper left hand corner of screen.

I have a Systemax desktop computer with Windows 10. I booted up this AM from "Sleep" mode and then went into my Documents list and tried to open a particular document. Got message that Windows encountered a problem and was going to restart. Computer
began to restart, but only completed a couple of operations and now I have only a blank screen with a flashing cursor in the upper left corner. I've tried a "hard" reboot (turned the power off and then on), but the same sequence occurs - it completes a couple
of operations and then stops with a blank screen and a flashing cursor in the left hand corner. As far as I know I did not install the new Windows 10 update. Can you help?

 

stuck and flickering mouse in left hand corner of screen

stuck and flickering mouse in left hand corner of screen

 

Mouse Cursor Shoots to top left corner of screen

Recently my mouse cursor has been randomly jumping to the top left corner of the screen. It'll just get stuck there, and if I move the mouse, the cursor will sort of behave like normal, but be quickly flashing in the corner and where I've pointed it, seemingly
at the same time. If I let it keep going, eventually I can't move the cursor and not even the touchscreen will work - only keyboard shortcuts will - and the cursor is still stuck in the left-hand corner. This has happened several times in the last few days.


The only thing that seems to solve it is completely shutting off the computer, then turning it back on. If I just hit restart the problem persists even when the computer turns back on; I have to actually shut down first.

This happens regardless of whether I'm using the USB mouse, the trackpad, or the touchscreen. I can't find any triggers for this happening - it will just occur after some time of being turned on. I've installed all the latest updates to the OS and the
drivers. I've done the /scannow thing in the command prompt.

I know the default Microsoft answer is "update your drivers and perform a clean boot, then try safe mode". I'd like an actual answer if possible. Thanks in advance, I appreciate the help.