I just got this computer off craigslist and it was working great until i turned it off and now when I try to boot it up, the screen is black but i can see my mouse. I have tried changing the cords but it didn't help. It has windows 8 on it and is upgraded to 4 gb of ram. Please help
Also, please try booting up the system in the safemode (F2 during startup) and reinstall the video card drivers. Please enter your service tag # on the link below, select the OS, then download the Video card drivers listed from Video section onto the system and install it.