Hello,
My laptop, a Toshiba P500 is faulty. It will boot past boot and as soon as it reaches the "Windows Starting" logo splash, it will freezes and it will stay like that for hours. I changed the hard disk, the memory modules, I tried to re-install the OS, I tried to boot off a Linux Live CD and Live USB and USB DVD Drive, but all to no avail. I change the configuration on the Bios, then reset it to default, again to no avail. Do you think it is a MB fault or CPU or GPU?