Ascer one series

Hello,
i hav just formatted my acer one series due to viruse problem, and while tring to instal my softwears, the information on the screen suggested i shld restart the system which i did, since then screen has not been powered again and non of the indicators are on any more except but the power botten light alone. i spent lot of money to format the system and to get new softwears, of which i can not make use of. please i really need sollution.