sorry for bad english, im from russia when i install the windows 7 (windows vista fails with same sympthoms), installation freeze and computer dont do anything. if i press power or reboot button, computer dont do anything. last way to reboot computer is unplug it from electricity. the cofiguration of my computer is: intel 4 631 3.0ghz, 1gb ddr2, msi 915p combo 2v, sapphire radeon x1600 xt 256 mb, sound integrated. p.s. by the way, the bios says that temperature on cpu is 18c, but temperature in room is 25-27. on full load temperature up to 20. maybe problem with bios?