First, you can try this: Shut your system down, then disconnect all of your drives except your boot drive, then restart. If it boots to Windows, then run all of your drive updates, then shut it down and reconnect your other drives.
If that doesn't fix it, shut down and disconnect all of your drives, including any optical drives, then boot to BIOS and set your boot sequence to USB, then shut the system down. You'll need to set up a USB thumbdrive (at least 4GB) for USB Windows Install. Connect your OS drive only, plug in your thumb drive, then restart your computer. It should boot to the Windows installation page. Complete install, update drivers, then shutdown, reconnect other drives, and fire it back up again.
If this doesn't work let us know, along with any error messages that may show up.