I am trying to install 12.04.4 on a Dell Precision M70 laptop. I wiped the disk clean and established 3 partitions - one formatted for root, one for swap and one NTFS. All are at least 30 Gig. I have tried installing from a CD but it always hangs without getting far. I created a bootable USB stick and was able to get quite a way with it. It appears that the system is about 2/3 installed and says it is currently installing system but no progress was made overnight. I have gotten to this same point twice. There is no error message - just no progress. Any ideas?
This sounds like corrupted USB image, maybe you can try to
Also, it may be bad hardware, try to run Live session Ubuntu from USB to try it out.