✔ 最佳答案
If you have short-circuited the motherboard then it will cost near the price of a new system so it's not worth repairing it's better to buy a new one, What you do is take the hard drive out, buy a Sata to usb cable ($29.00) or a external sata case to use the hard drive as a data drive once you have removed the files you need to save,
go to these website and download the software make a bootable CD or usb jump drive to boot the computer up with then you can copy the files from dive drive to the hard drive in the new computer
read the instructions on the websites on how to's