Sorry, but I'm totally trying to get my pc back up and it's difficult when you cant go to most helpful web sites on different pc. What happened to my pc????? Last week, I decided to add memory to my pc (stupid). I turned it off, unplugged power cord, took out memory. Added new memory , plugged power cord back in, pressed power button. Computer powered up, monitor BLANK. Nothing, nada. Everything inside pc came on and continues to stay on but screen still blank. Does anyone know what the heck could possibly have went wrong? Could I have damaged something unknowingly, maybe the memory slots, etc. Please help. Thanks, T.R.