My computer boots but outputs nothing!

Kyo1156

Honorable
Mar 15, 2017
8
0
10,510
My computer outputs nothing. Yesterday I tried to turn it on only to find everything normal except, my monitor is black and detects no dvi signal, my mouse and keyboard don't light up, nothing.

So after I first:
1. Reestablished all those connections in and tryed them in different ports, I then:
2. Opened my computer and made sure EVERY part is working fine. Fans turn on, motherboard powers cpu heatsink, gpu runs, hard drive runs, I have no clue what's wrong.
3. I reconnected the ram too. The only thing I'm not sure is working fine is the ram and my SSD as neither of them provide any physical clues to whether they're running or not.

It's like my computer is working completely normally and fine but outputting NOTHING. I don't understand bc just the day before (2 days ago) everything was working great and i didn't do anything out of ordinary between then and now. I'm absolutely stumped WHAT DO I DO??
 
Have you tried replacing the bios battery on the motherboard for a new one. The large round battery by the ram sticks a dead ones will or can cause booting issues. I've used cheap ones from pound land in an emergency that have worked failing that more reliable ones from maplin.