My BIOS is set to launch Windows 8.1, but I've recently upgraded to Windows 10. My stupid laptop doesn't recognise this, and attempts to launch Windows 8.1 instead. How do I change the BIOS settings to enable Win 10 boot-up?
I'm not getting an error message (the screen just goes black). I don't think it's a dual boot. The BIOS says Windows 8.1 is the factory installed O.S. I don't know how to change this setting to Win 10.