Unable to reinstall Windows after Bitlocker activated

[942476]

I've used the pc for 6 years, and all of a sudden Bitlocker is activated. That wasn't done by a human, and I don't have an account nor a key to open it. I created a bootable Windows 10 drive to start from scratch, but it wouldn't allow me to write to the disk because Bitlocker is activated. How do I wipe the drive and start fresh?

[Paul_Tikkanen · Accepted solution]

When you are at the screen where you get the 'windows cannot be installed to this disk' message, run the Run the Diskpart utility and clean the disk.

That should remove all formatting and partitions on the drive.

1. Press Shift+F10 from inside Windows Setup screen to open a command prompt window.
2. Type diskpart and press the Enter key.
3. Type list disk to find your disk number.
4. Type select disk (e.g., select disk0) to choose the disk you want to format.
5. Finally, type clean to wipe the disk completely.
6. Exit diskpart and install Windows.