This is what happen! I moved this system to anohter desk and pluged the monitor etc. Had a problem getting this system to boot up using this new monitor. All plugs were in however, the monitor would not boot, amber light not green. After several attempts finally this system was able to bootup using this monitor. (Was checking networking at this work station.) After I finished i took the system back to it regular work area and pluged it back into all of its original devices. Now the old monitor will not work with tis system, amber light always. HELP. did i lose the original video controller drivers and now this system will not boot up. I even tried other monitors, no hope. I can hear the hard drive booting no beeps so all other hardware is in order. I just can not see a thing.