If your computer isn’t starting in safe mode, here are some things you can try:

1. Press and hold the power button for 5 seconds. This will force the computer to shut off. Wait a few moments, then power back on.
2. Check any external hard drives and other devices that may be connected to the computer for power, and make sure they are securely connected.
3. Try changing the order of your boot devices. You can usually access the boot menu by pressing a key after the computer is first powered on, such as ‘F1’, ‘F2’, or ‘F12’. This will vary between computers.
4. Confirm that your computer is not in a low power state, such as sleep, hibernate, or standby. Check that the power cord is securely connected, and the laptop or monitor is properly connected if there is an external monitor.
5. If you are unable to enter safe mode, you may need to reinstall the operating system