If you stick the hard drive in another computer it will boot and you will be able to access your files, although you might have a couple driver issues. This can be fixed by running windows update. Windows will also deactivate, but you can reactivate it using the license key on the bottom of the computer, or it will automatically activate via a product key in the BIOS, depending on the computer. Sounds like your computer is pretty toast though, you could try repairing it, but you are probably better off with a new one at this point.