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BIOS error (502)

HP Recommended
Microsoft Windows 10 (64-bit)

My HP laptop crashed and can’t be rebooted. The error message is CMOS reset (502), enter - reboot the system. I don’t know how to “Enter “. Does that mean I directly press “ENTER” key on the keyboard? When I do it, nothing happens. Please help me! Thanks!


I tried to recover the BIOS using a USB drive and got the message below. What does it mean and how to solve the problem?

Flashing boot block

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