Having Motherboard Issues

Technobear

Commendable
Jun 10, 2016
1
0
1,510
Last week, my computer's monitor had no signal when I turned on my computer, then I realized the mouse nor the keyboard were working as well. So I decided to open the back of the pc up so I can see if there are any physical problems inside. There wasn't anything physical, nor is there at the moment (that i can see). The plug for the audio, USB ports, and monitor are connected directly on the motherboard.
Here's where I am confused:
When the computer is on, the fans are working and they are both connected to the Motherboard by wires, but the things I mentioned above are not working. Can anyone clarify what you think is going on or suggest what I do? I want to know if there is something i can do to fix it at all before replacing the computer (not going to only replace the Motherboard)
Thanks in advance