I'm trying to install Ubuntu Server 14.04 on an old system I have rebuilt (Intel Core 2 Duo with 4GB RAM, PATA HDD). I've succeeded in installing Ubuntu using a USB stick and the system reboots to run the new installation. However, it hangs at the point where the OS should begin to load. I have checked that the system is trying to boot from the hard drive and not the USB stick.
If I try to replace the USB stick, the system still hangs at the same point, regardless of whether I tell the system to boot from the USB stick or the hard drive. I can, however, boot into Ubuntu Desktop from the USB stick and reformat the drives from there. I can then try a fresh installation but the problem reoccurs.
I'm not a complete beginner with Ubuntu and have used installations of the desktop version for several years, however I would not consider myself an expert. This is my first attempt at using Ubuntu Server. Any suggestions would be greatly appreciated.