Absolutely a newbie in Ubuntu here. I have an HP Envy 15 with 64 bit Windows 7 Pro installed in it. Specs are i7-3610QM, 8 Gig of ram and 1 TB of hard drive space. My display adapters are an Intel HD Graphics 4000 and a Radeon HD 7750M. I tried installing Ubuntu 12.10 the other day but it just ejects the CD and leaves me at a black screen.