So recently when I wanted to make a server with my three computers my optiplex 980 wasn't working and popped up with the code 2, 4, I searched it up online and saw it was the CMOS battery the graphics card and nothing else worked and I did not know what to do, and I was really looking forward in making a server but the optiplex 980 messed up and failed to boot up so. So maybe you can see what the problem is and we actually need to make one for are home lab because we are making a domain for our house so we need this fixed.