Antwort auf „Why is my pc's screen black when I turn it on?”Motherboard. It has overheated. Common issue on these first Gen "all-in-ones". A refurbished board runs $150.00-200.00+ on EBay. Then there is the labor charge. Pull the hard drive out and either get an enclosure for it to act as an external hard drive for another computer or install it in a empty second hard drive bay of your new computer. Transfer the data over to the other hard drive since you don't know how much longer you can trust it. RIP HP Touchsmart.