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
try to press
F2 to into boot options and choose USB Bootable...
if it doesn't work, setting USB as
1st boot in Bios
if both are not working, your USB Bootable may not work properly