I have a Gateway GT5018E with Microsoft Medica Center 2004 Service Pack 3. The drive works sporadically. I spoke with Gateway, and they said replace the drive. Took it in for a new drive, and did not fix the problem. The repair specialist said he repaired the software. I have also noticed that when it does work and I install my sons games, They work for a few days, and then they are erased. I have tried everything that was suggested on line. I hope someone can help.