It is hard to tell why this is happening without details, checks, diagnostics.This may be happening due to simple Windows hung, hardware problem (e.g. your HDD or storage) or it may be caused by recently applied faulty Windows Update, some other faulty 3rd party update/driver, corrupted bootloader / Boot Configuration Data in Windows, virus/malware etc...
1. Try hard restart/hard reset.
Press the power on-button on your PC and hold it for about 5-10 seconds until your computer powers off completely.
Remove and unplug any external peripherals and accessories.
Press once the power-on button to turn on the PC and wait if it will start now. Wait...
If it still fails to load properly, go ahead with the next steps
2. Perform some basic hardware checks to rule out a potential hardware problem
- Please, shutdown the computer using the power button (pressed and hold for a few seconds until PC powers off)
- Power the computer back on.
As soon as you press the power-on button, immediately begin hitting the Esc button (like tap-tap-tap) before any logo appears. This should open a HP Startup Menu
- Choose F2 to open System Diagnostics. Follow the on-screen instructions to perform System Test >> Fast test.
If there are no system checks/no quick tests, perform HDD (hard disk drive) and RAM check (memory check).
Let me know the test results.
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