hi everyone, i'm having hope small issue try ubuntu without installing. i'm trying run ubuntu live see if win7 install has corrupted point thinks has (as in, having lost photos , documents), can't live boot work. when boot computer (asus g73), message flashes - 'error: "prefix" not set' , proceeds text based 3 option menu. when hit try without installing, screen disappears, usb stick's activity light flashes few seconds, nothing happens. in 1 instance left computer few minutes see if loaded, never did. should mention house mate had tried before me, same usb stick, , worked him. if has ideas, appreciated. thanks! since you're getting 'try' screen, , friend used successfully, suspect contents have become corrupted somehow. reload usb stick beginning. ntfs corruption. can windows? if so, run chkdsk -- check , repair disk. , shut machine down properly, no pushing po...