My Toshiba Satellite Laptop doesn't boot (Windows) past the "Toshiba" post screen. If I push F12 quickly after first powering up, it will then ask what boot sequence I want to use. Then, all I have to do is hit the "Enter" button and it will boot up; otherwise, it just hangs displaying the "Toshiba" post screen. Any ideas?

Usually, the BIOSs that show a splash screen provide an option to show the POST process instead of the pretty splash. Go back into the BIOS and see if you can find that setting, then disable the splash, reboot and see if the POST generates an error or informational message.