well maybe static eletricity? Did you do anyhting to provent it form happening?
If it was the harddrive the computer would still have lcd display.
Make sure the ram is in there right that might be a issue with no display on the screen. If the Cpu was bad the bois would still start up and stuff but u would see issuees with beeping any stuff. Might be the motherboard gone bad? Make sure u have your ram in there right that is about the most useful thing i can think of at this time.
If it was the harddrive the computer would still have lcd display.
Make sure the ram is in there right that might be a issue with no display on the screen. If the Cpu was bad the bois would still start up and stuff but u would see issuees with beeping any stuff. Might be the motherboard gone bad? Make sure u have your ram in there right that is about the most useful thing i can think of at this time.