Unfortunately, I installed Windows 8 (paralell to Windows 7, i. e. all files for Windows 7 were kept) but decided not to keep it. Afte having removed Windows 8 I can't start Windows 7.
I experimented with installing Linux and could start Windows 7 using Grub. Now I have also uninstalled Linux. Windows 7 can't be started.
What can I do to get Windows 7 back?