I have an on-going problem w/ a Win-7 machine* for the last 3 wks. or so. Here's my dilemma: I don't turn the machine off, it runs continuously and whenever I have some sort of a S/W update, if required, it reboots, and I have a "Windows failed to start msg. / Can't find Boot Manager". I reboot into the Win 7 Ultimate CD and I run the dianostics pgm. selecting startup repair. When this finishes I reboot to the win-7 pgm on the machine and again get the error msg. I then repete the above and select the Command Prompt and do the following: bootrec.exe/fixmbr I get a msg. saying it was successful and I turn off computer and reboot w/ no success. I do this 2~4 times (using the Win-7 CD each time) and finally the computer starts up normally. Very frustrating to say the least . . . any suggestions would be greatly appreciated. Thanx. * Dell Studio XPS 9000 / Intel i7 (2.66 GHz) / 12GB RAM / XFX Radeon HD 5870-1GB / Power Supply: 850-Watt.