Hi there, I've been using W7 RC x64 since it came out and I must say it worked great. However, this morning I've had a Disk boot failure message. I didn't have time to investigate yet, but I'd like to hear your thoughts about the possible cause of this. I did not install anything that day or even the weeks before. Didn't touch the HD (didn't even open the unit) and did not transport or hit it either. But I remember that yesterday when shutting off the computer, w7 installed 2 updates. I tried to use the install cd to use the repair option, but the OS was not detected and the repair did nothing. Any idea ?