Hello, i currently have my own little private business, repairing PCs etc. I had a customer bring a laptop to me (HP ) the screen would not come on. I turned on the PC it boots but the hdd light does not flash. I checked the hdd, tried connecting the pc to an external monitor. But nothing. I bought some RAM of the internet put it in the PC it booted and everything seemed fine until i rebooted the PC and the same problem occur the screen somed no activity and the hdd light stopped flash. Any ideas? Everytime i put in new RAM it seem to kill it off!