custom PC just stopped working

iliberate

Honorable
May 1, 2012
29
0
10,530
I have a build that's about 9 months old. I hadn't used the computer in a couple months and I went to turn it on and it turn on, all the fans go on, but the display says no hdmi and after about 20-30 seconds the computer just restarts and it keeps doing it. The mobo doesn't post. Any thoughts at all as to where I can begin? The case was open so maybe something just got loose?
 

Luiz Gustavo

Honorable
Jun 15, 2013
44
0
10,540
maybe any problem with ram sticks

remove every ram stick and turn on your PC, he need to beep
turn off, and instal one stick only, turn on, and continue this till all ram sticks are installed