[SOLVED] I can't instale Ubuntu 12.04

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http://www.linuxquestions.org – Hi all I want ask for something about this msg Error on computer when I tryed instal Ubuntu 12.04. I have a black screen with this texte Data 3.00 cmd c8 /00 /08 ;00;00;00;00;00/e0 tag 0 dma 4096 in Failed command : READ DMA Buffer 1/0error on device sda ,logical block de 0 a 7 dma 33 84 in I want to know what this msg Thank you every body for your help (HowTos)