i have windows 7 ultimate 64 bit
the problem is after entering my profile (or any other profile)
windows stuck and after 5 nim i receive this message:
Boot from CD/DVD :
DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER
If you can't get into safe mode go into your BIOS and see if the drive shows up there. If this a desk top and the drive does not show up try resetting the power and data cable on both the drive side and motherboard side.