If I boot OS but no display and the Q-code shows “Ad” after install RHEL 6.6/6.7 64 bit by UEFI mode, How should I do?
1. Before install OS, please go to BIOS and set the following item.
CSM-> Disable
or
CSM→Enable
Boot option filter→legacy
Network→legacy
Storage→legacy
Video→legacy
Other→legacy
2. If you have installed OS, please reboot system and into BIOS then set the following item.
CSM-> Disable
or
CSM→Enable
Boot option filter→legacy
Network→legacy
Storage→legacy
Video→legacy
Other→legacy
