I purchased an EMachine D6419 as a bundle package from Office Depot approxiamtely 18 months ago, the motherboard went on the machine. The machine will start up to the point of that the fan is working but nothing appears on the monitor. Also the computer will not power down when you try to turn it off, you have to pull the power cord from the rear of the machine. I know from searching EMachine website that the part no. is MBEM105551MS. I am looking for a compartable motherboard or one for less money ($160.00) that EMachine will charge. Any ideals. Also the vendor should be reputable. Please advise. Thank you