Repairing Windows does feel nerve-wrecking at times: stakes are high and so much is hanging in the balance (your Windows installation, your data, your precious time).
The apparent simplicity of the Windows 10 interface completely belies the power hidden underneath its understated elegance. You can frequently, even though not always predictably, recover the seemingly unrecoverable.
Here is a quick guide on how you can restore a Windows system to a bootable state as quickly as possible, and get back to whatever you were doing before all hell broke loose.