Help : ubuntu stop at welcome screen , dual boot with vista

[kongfu]

i managed to install ubuntu into my computer with vista preinstalled . after restart , boot menu appeared . when I choose vista , it loaded fine . But when I choose ubuntu , the welcome screen appeared with ubuntu logo , name and loading progress bar , but then stopped there .
any help appreciate
i really need ubuntu
thanks,

(all the passwords for bios and harddisk disabled , laptop thinkpad T61 )

[devils casper]

Hi and Welcome !

Highlight Ubuntu title in boot Menu ( GRUB ) using up/down arrow keys and press e. Select kernel line and press e again. Delete quiet and splash words. Hit enter key and b.

Highlight Ubuntu title -- e --- select kernel line --- e --- delete quiet splash --- hit Enter key --- b.

[kongfu]

it first looped on echoing these :
ata3.00 : qc timeout
ata3.00 : failed to IDENTIFY (I/O Error, err_mask=0x4)
ata3.00 : COMRESET failed ( errno=-16 )
after a while , it passed through it and shows some feedback then :
check root=bootarg cat /proc/cmdline
or missing modules , devices : cat /proc/modules ls /dev
ALERT ! /dev/disk/by-uuid/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx does not exist .
Dropping to a shell !
( x means numbers )

WHY my disk not identified ?
regards,

[devils casper]

Did you pass any parameter during installation?
Type all-generic-ide in kernel line after deleting quiet and splash words. Hit Enter key and b.
Check if Ubuntu boots up.

[rajainnov]

why not use VMWare player on Vista, to run ubuntu, but this may pose problems incase u are on some kernel related stuff like device drivers development for Linux

[kongfu]

i tried all-generic-ide . not work .
i installed opensuse instead , ok to boot linux .
but it said winload.exe broken , so vista not boot .
anyway , linux boot fine .