Erm... I need more details to pass on to the developer.
A note though. It will take some time to recover. You need to be
very patient. Please also give as much details as you can as
possible.
1. Did you manage to see any files that Combofix removed?
2. Any errors that Windows give? Like any Blue Screen of
Death?
3. After which stage did Windows got stuck? For example, after
the you see the Windows logo (the one with the green moving
bar)
4. Before running Combofix, what has happened to your PC? For
example, your antivirus told you your computer has got some
infection.
5. Did you manually restart the PC or did Combofix restarted the
PC?