Dell Inspiron 1100 Dead ---- Power LED and Charging LED Blink nonstop as long as the PS is plugged in

ok before i throw this thing away just want to ask the experts. i have a dell inspiron 1100 and it was working one day and then my cousins went on it and were just doing crap and when i saw it again it wouldn’t come up for anything. Without the PS plugged in it will not do anything when you press the power button. when i plug the PS in the Power led and the charging led blink non stop and pressing the power button shows no other indication of life tried it both with and without the battery result stay the same no PS DEAD with PS Power LED and Charging LED blink non stop with or with out PS, battery still has no affect. i have tested the PS and it all seems to be good right voltage and all. but i have done all that dell has to offer as far as troubleshooting this but they don’t have anything that describes this exact problem. i have removed all components and held the power button down for 10-30 seconds (Dell says that will flash the bios ) and with the same result even with all components out including memory the systems behaves the same. no beeping and no error code lights on the num lock caps lock and scroll lock lights.