Windows 7 on a Dell and on an iMac boot incompletely once in about 7, 8 times -- it will show "Starting Windows", and supposedly, the 4 color dots -- blue, red, yellow, green -- should come out and flying in loops to form the Windows logo.
But these 4 dots didn't show up and the boot up process just halt there. How can this be fixed? Could it be that the network card or the router / DHCP server didn't respond to the computer, and the computer just wait and wait (no time out is implemented to wait for at most 1 or 2 minutes and just show a warning and reboot in 30 seconds or something). Is this a known issue and can it be fixed?
(An AT&T u-verse router is used, but I supposed no matter how the router behaves, Windows should not be affected by it and stop booting up)