i went to turn on my computer and it was acting normal until it got the the ubuntu logo.
it showed only the circle with the 3 circles on it, stayed there for a while, then the logo disappeared and the screen stayed blank.
so i turned it off and tried again.
this is the list it gave me to choose from.
2.6.31-21-generic . (this is normal i assume. i tried it and the same thing happened)
2.6.31-21-generic(recovery mode) (tried this and it just gave me a bunch of commands that i could use. but i dont know enough about computers to know how to use them)
2.6.31-20-generic (i think i tried this one too)
memory test (memtest86+) (i tried this, let it run until it started over again. then pressed esc and it rebooted and brought me back to this list)
memory test (memtest86+, serial console 115200)