When your Windows-operated PC or laptop starts acting up, the cause could be any number of problems. Here's how to boot in safe mode and solve it.

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Or, Windows freezes at the login screen due to system corruption. So, you can use CMD on the login screen to perform an SFC/ DISM scan, boot the PC in safe mode, etc.

Comodo Internet Security couldn't start properly one day. I uninstalled and restarted. Then reinstalled but failed. It asked me to restart. I was no longer able to boot into Windows after that ...