If you're BSODing due to old chipset drivers you can enter Safe Mode by pressing F8 before the Windows loading screen shows. From there, you can do sysprep to wipe your PC of all drivers and leave OS and all programs intact.
1) Go to C:\Windows\System32\Sysprep and open sysprep.exe
2) Select OOBE and Reboot, check 'Generalize' and confirm with OK. Wait for the PC to finish working, it's going to reboot automatically
3) You'll get screen to input all the info just like if you reinstalled your OS, in account name type anything other than what your current account is called
4) Once that's done, log off and log back in with your old account
5) Open Control Panel > User accounts > Manage another account and delete the freshly made account
This should restore your PC to the state prior to replacing your motherboard. Now all you have to do is reinstall the drivers and you're done. Programs, apps and user settings will stay intact as previously mentioned.