Hi I Have an emachine t3642 when i power up the computer i get no error messages or anything it just has no display. I took out the ram and got an error message so replaced it with new ram and no error. I can here the fan hard drive everything powers up but no display. My monitor light just blinks. I even replaced the cpu and still nothing at this point i am thinking mobo. I also put in a video card and tried using it for the monitor still nothing. Help please.