I have a two years old Dell Optiplex990 computer with Windows 7 Pro.
Because of lack of available space on the harddrive I used the Backup and System Recovery option within the control panel to back the computer up to an external usb hd and then I started the Windows installation in repair mode recovering from the usb hd to a new and larger hard drive.
I have done this A LOT of times with no problems.
Also this pc seems to be working fine but I you choose RESTART from within Windows I shuts down but can't boot up case it claims that there is no boot device present.
Funny thing is that if you chose SHUT DOWN from Windows and then press the power bottom Windows starts up without any problems what so ever??
What seems to be causing this?