Here's a quick and dirty trick, if you absolutely want to keep
your Windows installation.
1- Make Backup , just in case
2- Prior to final shutdown before you switch your hardware
go to add/remove programs, and Uninstall the drivers your
currently using, Chipset, audio ?, Videocard
3- Shutdown, don't reboot.
4- Switch hardware
5 Reboot, and reinstall new drivers.
This method works , but the cleanest way is a complete reinstall of Windows.
Also take note, you will need to Reactivate Windows.
If you have a legit copy, most likely your gonna have to get in contact
with Microsoft.