If a workstation is not booting properly, or will sit at boot screen for multiple hours, it may be an issue with a previously installed Windows Update package.
- Let the computer sit for at least and hour to make sure it isn’t a Windows Update just finishing.
- Power off the computer completely.
- Power the computer back on and see if there are any indications it is related to a windows update that hasn’t completed yet.
- If the computer continues to hang and not complete the boot up process, press and hold the power button to power down the computer.
- Press the power button again, as soon as the computer logo or bios logo goes away press and hold the power button again.
- Repeat this process until the screen states that the computer is booting into the Windows Recovery Environment.
- If this was related to the Windows update, going back to a previous build will generally resolve the issue.