Do you remember what happen before the laptop restarted? IS it when you are installing something or browsing certain website? How about the resolution? Do you notice any different on the resolution? if you are able to login to windows, you might want to check the resolution setting.
This is one interesting problem. Hope to hear more about it.
My sisters laptop (DELL inspiron 2200 winxp pro) encountered some problem and it restarted... when the screen came up the fontsize is microscopic! They are too small to read! Almost everything but the desktop and startmenu icons are small. I tried restarting it again but i still got the problem. I can't even read windows is shutting down but the microsoft logo and text is at the normal size. On the log on screen the windows logo is normal but the users and the message to "log-in blahblahblah" is too small. a capital leter is about a milimeter and a small one is about the size of this dot "." --- the word ad-aware se is about this long -.- and there's no way you'll be able to read it! i don't even know what the agent baloon is saying. the agents are about the size of this asterisk *. I can't navigate my way around the computer. the word start on the start menu is about the length of a dash - and the hight of a dot . and i'm not making this up! please is there anyone there who can help me. I'm currently running all of the anti-everythings maybe it's a virus or something... help pls..