Solved Boot problem - digital signature of winload.exe

Hello, i have windows 8. I wanted to test something and installed Vista on other partition. Nextly i've installed easybcd to add 8's entry into boot menu and delete vistas. But it shows:
However F8 doesn't work, just back to the boot menu. I tried repairing by w8 OS disc (automatically and with few commands which i found), but that just recover vista - on w8 still shows the same. I tried also by adding entry with visualbcd, but it still shows this problem.

Hi, download Bootice from here in 64bit version Windows Search: bootice - Softpedia and start it
Select " BCD Edit " there select "Easy mode " there change winload.exe in winload.efi

edit:

Thanks for your answers.
First solution just shows the same information with efi file.
Second: I don't see in my bios this option.
I solved it with this: winload.exe digital signature not verified & boot manager loop Solved - Windows 7 Help Forums
Just used all commands from this topic.