I build a PC. It was working fine it was fast, and amazing, then---I got no signal..and tried to turn it off, then on, but when I turned it back on. It made a series of beeps.

One long beep, 3 short beeps, (a second pause) and then one long beep.

1.3.1
Could ya'll help me? I can't find a result online that could really help me.