So I just opened up my PC to dust it, and after I plugged it back in it's started to beep every 4 seconds or so. Ehat could be causing this issue?
Ahh you're right I had just disconnected LED-strip which seemed to cause the issueprobably dislodged something causing it not work listen too beeps 3 short one long they all mean different things but something is wrong and the motherboard is telling you via the beeps.
Beep codes
http://www.computerhope.com/beep.htm