Computer will not go past "Start Windows Normally"

I got my farther the Dell D620 to start him off with, he was online when the battery went dead and turned off. I plugged it in and started it back up, it went to the "Start Windows Normally" screen, I pressed "Enter" to do this and it just keeps going back to the same "Start Windows Normally" screen after it goes to the window screen to load up. I have noticed a "Blue square" with white writing in it flashes for less than a second before going back to "Start Windows Normally" screen, it is to fast for me to read. How can I get past this? (if I can)