Computer freezing but whatever is on the screen stays there frozen

[Bittah Wizard]

Windows 10 computer freezes with whatever is on the screen at the time frozen on there but the computer acts as if it is off but it still has power because it's displaying an image on the monitor all tho its frozen. i think the fans turn off when this happens but i'm not to sure. this is random but usually happens after the system has been on for a few hours or sometimes more

 

[Colif]

Try running the free version of http://www.memtest86.com/ on your ram, one stick at a time. You don't want any errors, more than 0 means stick needs replacing

It makes a bootable USB so don't need windows to run it.