The Gigabyte GA-990FXA-UD3 board isn't functioning properly.
The Gigabyte GA-990FXA-UD3 board isn't functioning properly.
It seems the CPU might not be the issue if it doesn’t even POST normally. If a board defaults to the BIOS, sometimes it can boot from another drive—verify your HDD connections and their condition. Regarding the BIOS transition, note how quickly the system resets after entering it, especially with AM3+ systems.