i so when i boot up my os it loads in fine but once it gets to the screen where you usually log in i just have a bright blue page that shows up. the problem started when i went to display settings and the it just started wigging out. i think i might have tried changing the resolution cause it wasnt on 1440x900 like i wanted it and now i cant boot up if its not in safe mode.l i can run on 1440x900 in safe mode easily but not in normal mode and now im stuck in dos mode and need to install certain stuff and hear audio but my pc wont let me! if anyone can please help me i would greatly appreciate it.

thanks