Hp compaq d530 motherboard is not responding,what do i do?

Hi, try replacing the battery of the motherboard for it may be worn, a faulty battery usually makes the board not to work or sluggish. hope this helps

Check power coard, power supply(smps) then check without ram motherboar if motherbord gives beep then motherboard is ok if he dont gives beep then its need to replace motherboard.