Pavilion a6500f won't start up

[RabidEmu]

The computer won't boot, instead it just beeps. It looks like everything has power, the fans all seem to be working and I tried opening it up and making sure everything was connected properly. It beeps once for 15 seconds, then is quiet for 10 seconds, then beeps for 15 and this repeats continually. Does anyone have any suggestions?

 

[Niterpi]

same thing with me. - also, when the beep happens, the monitor says "going to sleep" other than that the monitor is black the entire time.

I am online searching for solutions now. if anyone knows, please help!