1 short beep, 2 long beeps

tinv

Honorable
May 25, 2012
4
0
10,510
Compaq Evo HP motherboard #283983-001
Older system has been running great for quite a while, but now on power up, i get 1 short and 2 long beeps. I have tried reset and replaced RAM, a different HD, new cmos battery. Machine will not boot or send signal to monitor.
Cannot afford new machine right now. See new motherboards online for about $75, but want to make sure that is necessary. video is integrated in motherboard.
Any ideas please?
Thanks all!