Common symptoms of motherboard issues are similar to CPU problems
The system does not display anything; an error code appears; one or more beeps occur; the system locks; the system reboots; a Windows BSOD (blue screen of death) appears; or one or more of the ports, expansion slots, or memory modules fails.
Motherboard problems and power problems are probably the most difficult issues to troubleshoot. Because various components are located on the motherboard, many things can cause errors. POST (power-on self-test) is one of the most beneficial aids for troubleshooting a motherboard.