my system is running but not display what is the problam. i will check the ram,smps and vga cable also what is thw problam.

is your pc have a video card? if they have try to take it and use the built in video of your motherboard, and check the capacitor of your motherboard if they are not busted.. if the problem occur again try to replaced your power supply.

hi, try this.. get the memory and listen any beep, if you hear continues beeping so your motherboard detect no memery present so it means your motherboard is good and your memory is defective. if no beep 2 are possible motherboard or processor. try also your power supply.