I'm Trying to install Ubuntu 12.04 on my computer. It had an old copy of Windows 7 on it I tried to reformat the hard drive for a fresh install of Ubuntu but I think I messed up the partitions in some way that prevents it from fully loading.

I'm able to complete the install fine and use guided partitioning so it should be happy but when it gets about 90% through at the part that ejects the cd and restarts the system it fails. After ejecting the CD and restarting it just loads up the bios lenovo splash screen then purple then black. I can hear a sound from my speakers like some notification sound but there is no text on my screen.

I've since gone back in under Rescue System to try and reconfigure the partitions hoping that it will fix it and i've tried several combinations. Currently it's

SCST1 (0,0,0) (sda) - 500.1 GB ATA WDC WD5000AAkKX-0
#1 100.0 MB     K      biosgrub
#2 494.1 GB   B K      ext4            /
#3 5.9 GB       F      swap            swap
   8.2 kb              FREE SPACE

I'm not sure if I need to set the ext4 to contain the boot flag but if I don't include at least one partition with the boot flag enabled it complains saying that "The partition table format in use on your disks normally requires you to create a separate partition for boot loader code. This partitionshould be marked for use as an "EFI boot Partition" and should be at least 35 MB in size. Note that this is not hte same as a partition mounted on /boot"

Like I said it seems to have installed all of the actual data from the CD it's just not properly booting for some reason