best thing to do is to disconnect all IDE and floppy cables. leaving only the power supply, 1 stick of RAM, a video card and the monitor. try reseating the ram several times, then use another RAM (memory module), if nothing still happens then try cleaning the contacts on the memory modules with a pencil eraser. if the beeps change to another pattern then you are getting somewhere...
anyway based on what i've read, it seems si NNIS sa tipidpc.com ang ayos gumawa. not that I know him or have had a transaction with him. yun nga lang sa me guadalupe ang location niya. or you may register sa tipidpc and sell your motherboard as defective. other people might want to salvage the bios chip or anything else the might be useful.