Thanks to all for trying help i end this with reset my OS win 10
but now when i try to boot from a bootable usb to install another OS (win 10 but different one) it not starting boot there is 2 option 1 say UEFI and other not sure
when i select UEFI on screen just left asrock logo and nothing else happen and when i select other one it start from SDD
i have asrock h81 R 2.0
Does any of the installed Windows load completely? If Windows 10 is loading completely, I'd prefer going through the "clean reset" process of Windows 10.
I actually had the similar experience while going through the USB Windows installation on Asrock H81 and it did NOT work out even after days of trying. At last, I had to connect an external hard drive for the installation.