Windows could not complete the installation. To install Windows on your computer, restart the installation.

This applies to Windows 7.

When prompted with error unable to complete installation:
Hit SHIFT-F10 to bring up command prompt.

Type MMC.
Click File -> Add/Remove Snap-in... (Or CTRL+M)
Select Computer Management (Double click and Finish on Local Computer).

Click OK

Double click Computer Management (Local) -> System Tools -> Local Users and Groups -> Users -> Double Click Administrator -> Uncheck Account is disabled -> OK

Now right click Administrator -> Set Password... -> Set a decent password to get started.
Now, restart. Should be good to go.

If this doesn't work try next step:

SHIFT-F10 to bring up command prompt.
Type: CD C:\windows\system32\oobe

Type msoobe
Enter

Make a generic account and password. Hit finish (if it requests a product key and you have one, enter it now. if OEM/No key required, just finish). Set time/date. Finish.

Restart.

Should be good to go.

By SAC (apostoflant).

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