I've purchased a PC from eBuyer, which has NO OS installed. Spec is as follows: AMD A4 3300 2.5Ghz Processor; 4GB RAM; 320GB HDD; DVD Writer; AMD Radeon HD6410D; No Operating System.I've downloaded Ubuntu 12.04LTS and created a Boot USB following the instructions on the Ubuntu website. When I put the USB in and power on the PC; it asks me whether I want to run Live; Install or Check Disc for Errors. I've tried both Live and Install and they just take me to a black screen and nothing happens. If I escape that screen the PC Boots up to "EFI Shell version 1.31 (4.653) current running mode 1.1.2. If I type EXIT on this, it then displays the Ubuntu logo on a purple back ground, with around 5 dots illuminating (as if its scrolling). After about 2-3 minutes these dots stop scrolling and the screen just doesn't do anything. I don't know how to get into the BIOS and I don't really know where to go from here!! I am a complete new person to Linux; and I'm trying to get the hang of it as I'm really interested to learn it to sit the LPIC-1 exam! Thank-you in advanced for your help!