|Wiped? Did you do the wiping? If all got formatted, I would reinstall your choice of operating system from a system disk and go from there. There is a good chance you may have a disk that came with.|
IF however you started the cpu up and its just black screen and you don't know anything about why that is the case, and you have checked the physical components and they are in great shape( for example the monitor cord isn't unplugged or loose, or eaten) You may have a malware. Have you tried cont alt del? or reboot in safe mode?
edit: took too long on my response the above beat me to it