Asrock UEFI secure boot problem

unkunk

Prominent
Jul 7, 2017
2
0
510
Please help!
I have set up secure boot on asrock h270m uefi by enabling 'supervizor password' option. But when I turn on and enter password, it seems nothing to happen! Black screen with cursor. When move the cursor, that picture shows up: almost clean background of normal UEFI menu picture with header 'EZ mode'. And no reaction on any button pressing. Only Ctr+Alt+Del makes leave uefi and downloads system.
I tryed to reboot two times with the same result, I thought password was wrong. But when I
purposely entered wrong password, it sayed 'wrong password, retry again'. So it was not a reason of that problem. Also I trye to start with boot menu (f11), it asks and accepts my password and works ok.
I have no overclocked, no upgrade uefi, it is new computer, all devices work ok.