Hello, if you have suddenly this message the best option is begin by testing your hard drive or SSD.
So you can execute an hardware test in your computer. For this, restart your computer by tapping F2 when it is been down for restart. You come in HP Hardware Diagnostic Interface and can execute all tests. If you have a fail please tell us.
For more information about HP Hardware Diagnostics please see this:
https://support.hp.com/us-en/document/c03467259
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