installed 12.04 and now its just a black screen!!

[cindy1990]

i just freshly installed ubuntu 12.04 and now i get a back screen when i turn my computer on. however i installed it via usb and somehow the grub is on there! everything else seemsto be on the hard drive. so in order to start ubuntu i have to plug in my usb. hit f12 have it boot from the usb. (i then can remove the usb) i dont want to have to do it that way every time i start my pc. how can i fix it? oh and while doing the updates. it said grub was missing (i had the usb unpluged) and it try to fix it but failed.

[jonnyboysmithy]

So grub is missing.
Run the following, with X being the your Ubuntu drive:

sudo grub-install /dev/sdX

For me that would be

sudo grub-install /dev/sda

I think the first hard disk is always /dev/sda and if you have a second disk then that would be /dev/sdb and so forth.

[cindy1990]

sweet! work perfectly thank you!!

[jonnyboysmithy]

Good!! Pass the popcorn!