When I tryna boot manjaro gnome image I have “selected boot image did not authenticate.Press to continue” and I didn’t reach somewhere.
Also I already check the sha1sum. fleshed from
Belana etcher.
How can I fix this and what is the root problem?
Welcome to the forum!
You must disable Secure Boot in the UEFI of your computer. Manjaro does not support Secure Boot.
Also make sure that Fast Boot and Windows Hybrid Sleep are disabled if you dual-boot with MS-Windows.