Have brand new Hp 550 notebook with pre-installed free Dos OS. I intended to install windows xp sp3, but after loading the setup files and about to start installing windows I get the following error message '' ........ STOP: 0x0000007B (0F789E63C, 0xC0000034, 0x00000000, 0x000000000). I seached knowledge based at support.microsoft website but no that solution. kindly suggest solution and advice accordingly. Thans in advance.