Professor

I have a new HP HDX18 using Windows Ultimate. This machine ran perfectly for one week. Then Microsoft sent out an upgrade for Windows Ultimate. I was already using an HP Pavilion dv9000, and both got the same upgrade for Windows Ultimate the same day. The older dv9000 took the upgrade easily. The HDX18 gave a blue screen every time I tried to boot it. I opened it in safe mode, with web, and went to Microsoft upgrade to see if the problem existed there. It did. Microsoft admitted it had sent an upgrade that did not work with the quad chip. They told me exactly the file in the upgrade that was causing the problem. I went to upgrade files, eliminated the one Microsoft said to get rid of, and the computer has worked perfectly since. The dv9000 does not like changing for a projector, and often gives a blue screen when connected. A second boot works well. The HDX18 shows no sign of this instability. Both give me great service.